51151355252 has 6 divisors (see below), whose sum is σ = 89514871698. Its totient is φ = 25575677624.

The previous prime is 51151355249. The next prime is 51151355317. The reversal of 51151355252 is 25255315115.

It can be written as a sum of positive squares in only one way, i.e., 38120219536 + 13031135716 = 195244^2 + 114154^2 .

It is a super-2 number, since 2×51151355252² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6393919403 + ... + 6393919410.

It is an arithmetic number, because the mean of its divisors is an integer number (14919145283).

Almost surely, 2^51151355252 is an apocalyptic number.

It is an amenable number.

51151355252 is a deficient number, since it is larger than the sum of its proper divisors (38363516446).

51151355252 is a wasteful number, since it uses less digits than its factorization.

51151355252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12787838817 (or 12787838815 counting only the distinct ones).

The product of its digits is 37500, while the sum is 35.

The spelling of 51151355252 in words is "fifty-one billion, one hundred fifty-one million, three hundred fifty-five thousand, two hundred fifty-two".