51162787 has 16 divisors (see below), whose sum is σ = 57960000. Its totient is φ = 44808192.

The previous prime is 51162779. The next prime is 51162821. The reversal of 51162787 is 78726115.

51162787 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51162787 - 2³ = 51162779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51162737) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 40339 + ... + 41587.

It is an arithmetic number, because the mean of its divisors is an integer number (3622500).

Almost surely, 2^51162787 is an apocalyptic number.

51162787 is a deficient number, since it is larger than the sum of its proper divisors (6797213).

51162787 is a wasteful number, since it uses less digits than its factorization.

51162787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1422.

The product of its digits is 23520, while the sum is 37.

The square root of 51162787 is about 7152.8167179091. The cubic root of 51162787 is about 371.2371226738.

The spelling of 51162787 in words is "fifty-one million, one hundred sixty-two thousand, seven hundred eighty-seven".