51466431 has 4 divisors (see below), whose sum is σ = 68621912. Its totient is φ = 34310952.

The previous prime is 51466427. The next prime is 51466477. The reversal of 51466431 is 13466415.

51466431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 51466431 - 2² = 51466427 is a prime.

It is a super-2 number, since 2×51466431² = 5297587039755522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51466031) 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 3 ways as a sum of consecutive naturals, for example, 8577736 + ... + 8577741.

It is an arithmetic number, because the mean of its divisors is an integer number (17155478).

Almost surely, 2^51466431 is an apocalyptic number.

51466431 is a deficient number, since it is larger than the sum of its proper divisors (17155481).

51466431 is a wasteful number, since it uses less digits than its factorization.

51466431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17155480.

The product of its digits is 8640, while the sum is 30.

The square root of 51466431 is about 7174.0108028912. The cubic root of 51466431 is about 371.9700880678.

The spelling of 51466431 in words is "fifty-one million, four hundred sixty-six thousand, four hundred thirty-one".