51498131 has 2 divisors, whose sum is σ = 51498132. Its totient is φ = 51498130.

The previous prime is 51498103. The next prime is 51498193. The reversal of 51498131 is 13189415.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51498131 - 2⁶ = 51498067 is a prime.

It is a super-2 number, since 2×51498131² = 5304114992986322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51498731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25749065 + 25749066.

It is an arithmetic number, because the mean of its divisors is an integer number (25749066).

Almost surely, 2^51498131 is an apocalyptic number.

51498131 is a deficient number, since it is larger than the sum of its proper divisors (1).

51498131 is an equidigital number, since it uses as much as digits as its factorization.

51498131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 32.

The square root of 51498131 is about 7176.2198266218. The cubic root of 51498131 is about 372.0464422496.

The spelling of 51498131 in words is "fifty-one million, four hundred ninety-eight thousand, one hundred thirty-one".