45188131 has 2 divisors, whose sum is σ = 45188132. Its totient is φ = 45188130.

The previous prime is 45188113. The next prime is 45188147. The reversal of 45188131 is 13188154.

Together with previous prime (45188113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45188131 - 2¹¹ = 45186083 is a prime.

It is a super-2 number, since 2×45188131² = 4083934366546322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 45188093 and 45188102.

It is not a weakly prime, because it can be changed into another prime (45188161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22594065 + 22594066.

It is an arithmetic number, because the mean of its divisors is an integer number (22594066).

Almost surely, 2^45188131 is an apocalyptic number.

45188131 is the 4252-nd centered pentagonal number.

45188131 is a deficient number, since it is larger than the sum of its proper divisors (1).

45188131 is an equidigital number, since it uses as much as digits as its factorization.

45188131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3840, while the sum is 31.

The square root of 45188131 is about 6722.2117639955. The cubic root of 45188131 is about 356.1843167711.

The spelling of 45188131 in words is "forty-five million, one hundred eighty-eight thousand, one hundred thirty-one".