51435916 has 24 divisors (see below), whose sum is σ = 103218080. Its totient is φ = 21969792.

The previous prime is 51435911. The next prime is 51435941. The reversal of 51435916 is 61953415.

It is not an unprimeable number, because it can be changed into a prime (51435911) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5830 + ... + 11698.

Almost surely, 2^51435916 is an apocalyptic number.

It is an amenable number.

51435916 is an abundant number, since it is smaller than the sum of its proper divisors (51782164).

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

51435916 is a wasteful number, since it uses less digits than its factorization.

51435916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6193 (or 6191 counting only the distinct ones).

The product of its digits is 16200, while the sum is 34.

The square root of 51435916 is about 7171.8837135023. The cubic root of 51435916 is about 371.8965585129.

The spelling of 51435916 in words is "fifty-one million, four hundred thirty-five thousand, nine hundred sixteen".