45008531 has 2 divisors, whose sum is σ = 45008532. Its totient is φ = 45008530.

The previous prime is 45008527. The next prime is 45008543. The reversal of 45008531 is 13580054.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45008531 - 2² = 45008527 is a prime.

It is a super-2 number, since 2×45008531² = 4051535725555922, 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 45008531.

It is not a weakly prime, because it can be changed into another prime (45008521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22504265 + 22504266.

It is an arithmetic number, because the mean of its divisors is an integer number (22504266).

Almost surely, 2^45008531 is an apocalyptic number.

45008531 is a deficient number, since it is larger than the sum of its proper divisors (1).

45008531 is an equidigital number, since it uses as much as digits as its factorization.

45008531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 45008531 is about 6708.8397655630. The cubic root of 45008531 is about 355.7118059597.

Adding to 45008531 its reverse (13580054), we get a palindrome (58588585).

It can be divided in two parts, 4500 and 8531, that added together give a palindrome (13031).

The spelling of 45008531 in words is "forty-five million, eight thousand, five hundred thirty-one".