15975145 has 16 divisors (see below), whose sum is σ = 19926720. Its totient is φ = 12285504.

The previous prime is 15975119. The next prime is 15975151. The reversal of 15975145 is 54157951.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15975145 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13851 + ... + 14959.

It is an arithmetic number, because the mean of its divisors is an integer number (1245420).

Almost surely, 2^15975145 is an apocalyptic number.

It is an amenable number.

15975145 is a deficient number, since it is larger than the sum of its proper divisors (3951575).

15975145 is a wasteful number, since it uses less digits than its factorization.

15975145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1224.

The product of its digits is 31500, while the sum is 37.

The square root of 15975145 is about 3996.8919174779. The cubic root of 15975145 is about 251.8536617824.

The spelling of 15975145 in words is "fifteen million, nine hundred seventy-five thousand, one hundred forty-five".