5256121504 has 12 divisors (see below), whose sum is σ = 10347989274. Its totient is φ = 2628060736.

The previous prime is 5256121439. The next prime is 5256121537. The reversal of 5256121504 is 4051216525.

It can be written as a sum of positive squares in only one way, i.e., 4671449104 + 584672400 = 68348^2 + 24180^2 .

It is a super-2 number, since 2×5256121504² = 55253626529622444032, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82126867 + ... + 82126930.

Almost surely, 2^5256121504 is an apocalyptic number.

It is an amenable number.

5256121504 is a deficient number, since it is larger than the sum of its proper divisors (5091867770).

5256121504 is a wasteful number, since it uses less digits than its factorization.

5256121504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164253807 (or 164253799 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 31.

The square root of 5256121504 is about 72499.1138152736. The cubic root of 5256121504 is about 1738.6885683515.

The spelling of 5256121504 in words is "five billion, two hundred fifty-six million, one hundred twenty-one thousand, five hundred four".