51204867 has 32 divisors (see below), whose sum is σ = 86976000. Its totient is φ = 26085888.

The previous prime is 51204863. The next prime is 51204869. The reversal of 51204867 is 76840215.

It is not a de Polignac number, because 51204867 - 2² = 51204863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51204863) 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 31 ways as a sum of consecutive naturals, for example, 3009 + ... + 10557.

It is an arithmetic number, because the mean of its divisors is an integer number (2718000).

Almost surely, 2^51204867 is an apocalyptic number.

51204867 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

51204867 is a deficient number, since it is larger than the sum of its proper divisors (35771133).

51204867 is a wasteful number, since it uses less digits than its factorization.

51204867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7595.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 51204867 is about 7155.7576118815. The cubic root of 51204867 is about 371.3388722604.

The spelling of 51204867 in words is "fifty-one million, two hundred four thousand, eight hundred sixty-seven".