51672931 has 2 divisors, whose sum is σ = 51672932. Its totient is φ = 51672930.

The previous prime is 51672899. The next prime is 51672941. The reversal of 51672931 is 13927615.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51672931 - 2⁵ = 51672899 is a prime.

It is a super-2 number, since 2×51672931² = 5340183596261522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51672941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25836465 + 25836466.

It is an arithmetic number, because the mean of its divisors is an integer number (25836466).

Almost surely, 2^51672931 is an apocalyptic number.

51672931 is a deficient number, since it is larger than the sum of its proper divisors (1).

51672931 is an equidigital number, since it uses as much as digits as its factorization.

51672931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11340, while the sum is 34.

The square root of 51672931 is about 7188.3886233286. The cubic root of 51672931 is about 372.4669123652.

The spelling of 51672931 in words is "fifty-one million, six hundred seventy-two thousand, nine hundred thirty-one".