45237131 has 2 divisors, whose sum is σ = 45237132. Its totient is φ = 45237130.

The previous prime is 45237121. The next prime is 45237163. The reversal of 45237131 is 13173254.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45237131 - 2¹⁸ = 44974987 is a prime.

It is a super-2 number, since 2×45237131² = 4092796042222322, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45237131.

It is not a weakly prime, because it can be changed into another prime (45237121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22618565 + 22618566.

It is an arithmetic number, because the mean of its divisors is an integer number (22618566).

Almost surely, 2^45237131 is an apocalyptic number.

45237131 is a deficient number, since it is larger than the sum of its proper divisors (1).

45237131 is an equidigital number, since it uses as much as digits as its factorization.

45237131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2520, while the sum is 26.

The square root of 45237131 is about 6725.8554102805. The cubic root of 45237131 is about 356.3130137431.

The spelling of 45237131 in words is "forty-five million, two hundred thirty-seven thousand, one hundred thirty-one".