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15010057 = 19790003
BaseRepresentation
bin111001010000…
…100100001001
31001020120221001
4321100210021
512320310212
61253415001
7241404046
oct71204411
931216831
1015010057
118522307
12503a461
1331570ba
141dca1cd
1514b7657
hexe50909

15010057 has 4 divisors (see below), whose sum is σ = 15800080. Its totient is φ = 14220036.

The previous prime is 15010033. The next prime is 15010069. The reversal of 15010057 is 75001051.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-15010057 is a prime.

It is a super-2 number, since 2×150100572 = 450603622286498, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 790003 = 15010057 / (1 + 5 + 0 + 1 + 0 + 0 + 5 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15010157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 394983 + ... + 395020.

It is an arithmetic number, because the mean of its divisors is an integer number (3950020).

Almost surely, 215010057 is an apocalyptic number.

It is an amenable number.

15010057 is a deficient number, since it is larger than the sum of its proper divisors (790023).

15010057 is an equidigital number, since it uses as much as digits as its factorization.

15010057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790022.

The product of its (nonzero) digits is 175, while the sum is 19.

The square root of 15010057 is about 3874.2814817718. The cubic root of 15010057 is about 246.6763122192.

The spelling of 15010057 in words is "fifteen million, ten thousand, fifty-seven".

Divisors: 1 19 790003 15010057