51815076 has 12 divisors (see below), whose sum is σ = 120901872. Its totient is φ = 17271688.

The previous prime is 51815063. The next prime is 51815089. The reversal of 51815076 is 67051815.

It is an interprime number because it is at equal distance from previous prime (51815063) and next prime (51815089).

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2158950 + ... + 2158973.

It is an arithmetic number, because the mean of its divisors is an integer number (10075156).

Almost surely, 2^51815076 is an apocalyptic number.

It is an amenable number.

51815076 is an abundant number, since it is smaller than the sum of its proper divisors (69086796).

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

51815076 is a wasteful number, since it uses less digits than its factorization.

51815076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4317930 (or 4317928 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 33.

The square root of 51815076 is about 7198.2689585761. The cubic root of 51815076 is about 372.8081344508.

The spelling of 51815076 in words is "fifty-one million, eight hundred fifteen thousand, seventy-six".