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1015052197 is a prime number
BaseRepresentation
bin111100100000000…
…111011110100101
32121201222222211211
4330200013132211
54034323132242
6244420031421
734103541565
oct7440073645
92551888754
101015052197
11480a74815
12243b32571
131323aa503
1498b48da5
155e1a6317
hex3c8077a5

1015052197 has 2 divisors, whose sum is σ = 1015052198. Its totient is φ = 1015052196.

The previous prime is 1015052179. The next prime is 1015052243. The reversal of 1015052197 is 7912505101.

1015052197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (1015052179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 871076196 + 143976001 = 29514^2 + 11999^2 .

It is an emirp because it is prime and its reverse (7912505101) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1015052197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1015052147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 507526098 + 507526099.

It is an arithmetic number, because the mean of its divisors is an integer number (507526099).

Almost surely, 21015052197 is an apocalyptic number.

It is an amenable number.

1015052197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1015052197 is an equidigital number, since it uses as much as digits as its factorization.

1015052197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3150, while the sum is 31.

The square root of 1015052197 is about 31859.8838196250. The cubic root of 1015052197 is about 1004.9924331336.

Adding to 1015052197 its reverse (7912505101), we get a palindrome (8927557298).

The spelling of 1015052197 in words is "one billion, fifteen million, fifty-two thousand, one hundred ninety-seven".