45845131 has 2 divisors, whose sum is σ = 45845132. Its totient is φ = 45845130.

The previous prime is 45845123. The next prime is 45845179. The reversal of 45845131 is 13154854.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45845131 - 2³ = 45845123 is a prime.

It is a super-2 number, since 2×45845131² = 4203552072814322, which contains 22 as substring.

It is equal to p_2766253 and since 45845131 and 2766253 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 45845093 and 45845102.

It is not a weakly prime, because it can be changed into another prime (45845531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22922565 + 22922566.

It is an arithmetic number, because the mean of its divisors is an integer number (22922566).

Almost surely, 2^45845131 is an apocalyptic number.

45845131 is a deficient number, since it is larger than the sum of its proper divisors (1).

45845131 is an equidigital number, since it uses as much as digits as its factorization.

45845131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9600, while the sum is 31.

The square root of 45845131 is about 6770.9032632286. The cubic root of 45845131 is about 357.9022313465.

Subtracting from 45845131 its sum of digits (31), we obtain a triangular number (45845100 = T₉₅₇₅).

Adding to 45845131 its reverse (13154854), we get a palindrome (58999985).

The spelling of 45845131 in words is "forty-five million, eight hundred forty-five thousand, one hundred thirty-one".