5251566264 has 128 divisors (see below), whose sum is σ = 16021463040. Its totient is φ = 1401789312.

The previous prime is 5251566259. The next prime is 5251566283. The reversal of 5251566264 is 4626651525.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 150349 + ... + 181955.

It is an arithmetic number, because the mean of its divisors is an integer number (125167680).

Almost surely, 2^5251566264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5251566264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8010731520).

5251566264 is an abundant number, since it is smaller than the sum of its proper divisors (10769896776).

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

5251566264 is a wasteful number, since it uses less digits than its factorization.

5251566264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31689 (or 31685 counting only the distinct ones).

The product of its digits is 432000, while the sum is 42.

The square root of 5251566264 is about 72467.6911733774. The cubic root of 5251566264 is about 1738.1861425724.

The spelling of 5251566264 in words is "five billion, two hundred fifty-one million, five hundred sixty-six thousand, two hundred sixty-four".