15225057 has 16 divisors (see below), whose sum is σ = 23537280. Its totient is φ = 9708336.

The previous prime is 15225031. The next prime is 15225079. The reversal of 15225057 is 75052251.

It is a happy number.

15225057 is a `hidden beast` number, since 152 + 2 + 505 + 7 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-15225057 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 15225057.

It is not an unprimeable number, because it can be changed into a prime (15225157) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11638 + ... + 12879.

It is an arithmetic number, because the mean of its divisors is an integer number (1471080).

Almost surely, 2^15225057 is an apocalyptic number.

It is an amenable number.

15225057 is a deficient number, since it is larger than the sum of its proper divisors (8312223).

15225057 is a wasteful number, since it uses less digits than its factorization.

15225057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24549 (or 24543 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 27.

The square root of 15225057 is about 3901.9299071101. The cubic root of 15225057 is about 247.8485081124.

The spelling of 15225057 in words is "fifteen million, two hundred twenty-five thousand, fifty-seven".