5237721256 has 8 divisors (see below), whose sum is σ = 9820727370. Its totient is φ = 2618860624.

The previous prime is 5237721239. The next prime is 5237721271. The reversal of 5237721256 is 6521277325.

It can be written as a sum of positive squares in only one way, i.e., 3972780900 + 1264940356 = 63030^2 + 35566^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327357571 + ... + 327357586.

Almost surely, 2^5237721256 is an apocalyptic number.

It is an amenable number.

5237721256 is a deficient number, since it is larger than the sum of its proper divisors (4583006114).

5237721256 is a wasteful number, since it uses less digits than its factorization.

5237721256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654715163 (or 654715159 counting only the distinct ones).

The product of its digits is 176400, while the sum is 40.

The square root of 5237721256 is about 72372.1027468458. The cubic root of 5237721256 is about 1736.6573046963.

The spelling of 5237721256 in words is "five billion, two hundred thirty-seven million, seven hundred twenty-one thousand, two hundred fifty-six".