52172305 has 16 divisors (see below), whose sum is σ = 65379600. Its totient is φ = 39916800.

The previous prime is 52172293. The next prime is 52172317. The reversal of 52172305 is 50327125.

It is an interprime number because it is at equal distance from previous prime (52172293) and next prime (52172317).

It can be written as a sum of positive squares in 8 ways, for example, as 677329 + 51494976 = 823^2 + 7176^2 .

It is not a de Polignac number, because 52172305 - 2⁵ = 52172273 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 52172305.

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, 14155 + ... + 17455.

It is an arithmetic number, because the mean of its divisors is an integer number (4086225).

Almost surely, 2^52172305 is an apocalyptic number.

It is an amenable number.

52172305 is a deficient number, since it is larger than the sum of its proper divisors (13207295).

52172305 is a wasteful number, since it uses less digits than its factorization.

52172305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3444.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 52172305 is about 7223.0398725190. The cubic root of 52172305 is about 373.6629242008.

The spelling of 52172305 in words is "fifty-two million, one hundred seventy-two thousand, three hundred five".