51390536 has 16 divisors (see below), whose sum is σ = 96702000. Its totient is φ = 25603344.

The previous prime is 51390433. The next prime is 51390569. The reversal of 51390536 is 63509315.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9086 + ... + 13613.

It is an arithmetic number, because the mean of its divisors is an integer number (6043875).

Almost surely, 2^51390536 is an apocalyptic number.

It is an amenable number.

51390536 is a deficient number, since it is larger than the sum of its proper divisors (45311464).

51390536 is a wasteful number, since it uses less digits than its factorization.

51390536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22988 (or 22984 counting only the distinct ones).

The product of its (nonzero) digits is 12150, while the sum is 32.

The square root of 51390536 is about 7168.7192719481. The cubic root of 51390536 is about 371.7871561550.

The spelling of 51390536 in words is "fifty-one million, three hundred ninety thousand, five hundred thirty-six".