51853931 has 2 divisors, whose sum is σ = 51853932. Its totient is φ = 51853930.

The previous prime is 51853903. The next prime is 51853933. The reversal of 51853931 is 13935815.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51853931 - 2²² = 47659627 is a prime.

It is a super-2 number, since 2×51853931² = 5377660320305522, which contains 22 as substring.

Together with 51853933, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 51853891 and 51853900.

It is not a weakly prime, because it can be changed into another prime (51853933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25926965 + 25926966.

It is an arithmetic number, because the mean of its divisors is an integer number (25926966).

Almost surely, 2^51853931 is an apocalyptic number.

51853931 is a deficient number, since it is larger than the sum of its proper divisors (1).

51853931 is an equidigital number, since it uses as much as digits as its factorization.

51853931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16200, while the sum is 35.

The square root of 51853931 is about 7200.9673655697. The cubic root of 51853931 is about 372.9012980749.

The spelling of 51853931 in words is "fifty-one million, eight hundred fifty-three thousand, nine hundred thirty-one".