51499040356 has 9 divisors (see below), whose sum is σ = 90124114899. Its totient is φ = 25749293244.

The previous prime is 51499040339. The next prime is 51499040357. The reversal of 51499040356 is 65304099415.

The square root of 51499040356 is 226934.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51499040357) by changing a digit.

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 in 2 ways as a sum of consecutive naturals, for example, 397135 + ... + 510601.

Almost surely, 2^51499040356 is an apocalyptic number.

51499040356 is the 226934-th square number.

It is an amenable number.

51499040356 is a deficient number, since it is larger than the sum of its proper divisors (38625074543).

51499040356 is an frugal number, since it uses more digits than its factorization.

51499040356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226938 (or 113469 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 46.

The spelling of 51499040356 in words is "fifty-one billion, four hundred ninety-nine million, forty thousand, three hundred fifty-six".