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52151495231 = 1120509231169
BaseRepresentation
bin110000100100011110…
…001010101000111111
311222121112020110020102
4300210132022220333
51323301240321411
635542535311315
73524235252413
oct604436125077
9158545213212
1052151495231
1120132183290
12a13551b53b
134bc171a724
14274a382d43
1515536ced3b
hexc2478aa3f

52151495231 has 8 divisors (see below), whose sum is σ = 56895560400. Its totient is φ = 47407933440.

The previous prime is 52151495213. The next prime is 52151495233. The reversal of 52151495231 is 13259415125.

It is a happy number.

52151495231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-52151495231 is a prime.

It is a super-2 number, since 2×521514952312 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52151495233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110015 + ... + 341183.

It is an arithmetic number, because the mean of its divisors is an integer number (7111945050).

Almost surely, 252151495231 is an apocalyptic number.

52151495231 is a deficient number, since it is larger than the sum of its proper divisors (4744065169).

52151495231 is a wasteful number, since it uses less digits than its factorization.

52151495231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251689.

The product of its digits is 54000, while the sum is 38.

The spelling of 52151495231 in words is "fifty-two billion, one hundred fifty-one million, four hundred ninety-five thousand, two hundred thirty-one".

Divisors: 1 11 20509 225599 231169 2542859 4741045021 52151495231