51915582 has 24 divisors (see below), whose sum is σ = 112694400. Its totient is φ = 17272800.

The previous prime is 51915571. The next prime is 51915641. The reversal of 51915582 is 28551915.

It is a happy number.

51915582 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8419 + ... + 13217.

It is an arithmetic number, because the mean of its divisors is an integer number (4695600).

Almost surely, 2^51915582 is an apocalyptic number.

51915582 is an abundant number, since it is smaller than the sum of its proper divisors (60778818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51915582 is a wasteful number, since it uses less digits than its factorization.

51915582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5408 (or 5405 counting only the distinct ones).

The product of its digits is 18000, while the sum is 36.

The square root of 51915582 is about 7205.2468382423. The cubic root of 51915582 is about 373.0490247910.

The spelling of 51915582 in words is "fifty-one million, nine hundred fifteen thousand, five hundred eighty-two".