51373831 has 2 divisors, whose sum is σ = 51373832. Its totient is φ = 51373830.

The previous prime is 51373811. The next prime is 51373841. The reversal of 51373831 is 13837315.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51373831 - 2⁵ = 51373799 is a prime.

It is a super-2 number, since 2×51373831² = 5278541023233122, which contains 22 as substring.

It is equal to p_3078517 and since 51373831 and 3078517 have the same sum of digits, it is a Honaker prime.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 51373793 and 51373802.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51373811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25686915 + 25686916.

It is an arithmetic number, because the mean of its divisors is an integer number (25686916).

Almost surely, 2^51373831 is an apocalyptic number.

51373831 is a deficient number, since it is larger than the sum of its proper divisors (1).

51373831 is an equidigital number, since it uses as much as digits as its factorization.

51373831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560, while the sum is 31.

The square root of 51373831 is about 7167.5540458374. The cubic root of 51373831 is about 371.7468674300.

The spelling of 51373831 in words is "fifty-one million, three hundred seventy-three thousand, eight hundred thirty-one".