45981137 has 2 divisors, whose sum is σ = 45981138. Its totient is φ = 45981136.

The previous prime is 45981109. The next prime is 45981223. The reversal of 45981137 is 73118954.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45751696 + 229441 = 6764^2 + 479^2 .

It is a cyclic number.

It is not a de Polignac number, because 45981137 - 2⁸ = 45980881 is a prime.

It is a super-2 number, since 2×45981137² = 4228529919625538, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 45981137.

It is not a weakly prime, because it can be changed into another prime (45981337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22990568 + 22990569.

It is an arithmetic number, because the mean of its divisors is an integer number (22990569).

Almost surely, 2^45981137 is an apocalyptic number.

It is an amenable number.

45981137 is a deficient number, since it is larger than the sum of its proper divisors (1).

45981137 is an equidigital number, since it uses as much as digits as its factorization.

45981137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 38.

The square root of 45981137 is about 6780.9392417275. The cubic root of 45981137 is about 358.2558042955.

The spelling of 45981137 in words is "forty-five million, nine hundred eighty-one thousand, one hundred thirty-seven".