51064831 has 2 divisors, whose sum is σ = 51064832. Its totient is φ = 51064830.

The previous prime is 51064789. The next prime is 51064841. The reversal of 51064831 is 13846015.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51064831 - 2⁷ = 51064703 is a prime.

It is a super-2 number, since 2×51064831² = 5215233930117122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51064831.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51064841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25532415 + 25532416.

It is an arithmetic number, because the mean of its divisors is an integer number (25532416).

Almost surely, 2^51064831 is an apocalyptic number.

51064831 is a deficient number, since it is larger than the sum of its proper divisors (1).

51064831 is an equidigital number, since it uses as much as digits as its factorization.

51064831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 51064831 is about 7145.9660648509. The cubic root of 51064831 is about 371.0000484352. Note that the first 4 decimals are identical.

It can be divided in two parts, 510 and 64831, that added together give a triangular number (65341 = T₃₆₁).

The spelling of 51064831 in words is "fifty-one million, sixty-four thousand, eight hundred thirty-one".