51900319 has 4 divisors (see below), whose sum is σ = 51976120. Its totient is φ = 51824520.

The previous prime is 51900313. The next prime is 51900323. The reversal of 51900319 is 91300915.

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

It is a cyclic number.

It is not a de Polignac number, because 51900319 - 2⁵ = 51900287 is a prime.

It is a super-2 number, since 2×51900319² = 5387286224603522, 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 (51900313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36864 + ... + 38245.

It is an arithmetic number, because the mean of its divisors is an integer number (12994030).

Almost surely, 2^51900319 is an apocalyptic number.

51900319 is a deficient number, since it is larger than the sum of its proper divisors (75801).

51900319 is an equidigital number, since it uses as much as digits as its factorization.

51900319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75800.

The product of its (nonzero) digits is 1215, while the sum is 28.

The square root of 51900319 is about 7204.1876016661. The cubic root of 51900319 is about 373.0124628371.

The spelling of 51900319 in words is "fifty-one million, nine hundred thousand, three hundred nineteen".