5251565772 has 48 divisors (see below), whose sum is σ = 13629813120. Its totient is φ = 1748639376.

The previous prime is 5251565771. The next prime is 5251565779. The reversal of 5251565772 is 2775651525.

5251565772 is a `hidden beast` number, since 5 + 2 + 515 + 65 + 7 + 72 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (5251565771) 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, 76603 + ... + 127949.

It is an arithmetic number, because the mean of its divisors is an integer number (283954440).

Almost surely, 2^5251565772 is an apocalyptic number.

It is an amenable number.

5251565772 is an abundant number, since it is smaller than the sum of its proper divisors (8378247348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5251565772 is a wasteful number, since it uses less digits than its factorization.

5251565772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52307 (or 52299 counting only the distinct ones).

The product of its digits is 735000, while the sum is 45.

The square root of 5251565772 is about 72467.6877787611. The cubic root of 5251565772 is about 1738.1860882910.

The spelling of 5251565772 in words is "five billion, two hundred fifty-one million, five hundred sixty-five thousand, seven hundred seventy-two".