15052257 has 32 divisors (see below), whose sum is σ = 24768000. Its totient is φ = 8957520.

The previous prime is 15052253. The next prime is 15052291. The reversal of 15052257 is 75225051.

It is a happy number.

It is not a de Polignac number, because 15052257 - 2² = 15052253 is a prime.

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 15052257.

It is not an unprimeable number, because it can be changed into a prime (15052253) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17094 + ... + 17952.

It is an arithmetic number, because the mean of its divisors is an integer number (774000).

Almost surely, 2^15052257 is an apocalyptic number.

It is an amenable number.

15052257 is a deficient number, since it is larger than the sum of its proper divisors (9715743).

15052257 is a wasteful number, since it uses less digits than its factorization.

15052257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938 (or 932 counting only the distinct ones).

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

The square root of 15052257 is about 3879.7238303776. The cubic root of 15052257 is about 246.9072684841.

The spelling of 15052257 in words is "fifteen million, fifty-two thousand, two hundred fifty-seven".