45113681 has 2 divisors, whose sum is σ = 45113682. Its totient is φ = 45113680.

The previous prime is 45113671. The next prime is 45113723. The reversal of 45113681 is 18631154.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45104656 + 9025 = 6716^2 + 95^2 .

It is a cyclic number.

It is not a de Polignac number, because 45113681 - 2⁶ = 45113617 is a prime.

It is a super-2 number, since 2×45113681² = 4070488426739522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (45113671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22556840 + 22556841.

It is an arithmetic number, because the mean of its divisors is an integer number (22556841).

Almost surely, 2^45113681 is an apocalyptic number.

It is an amenable number.

45113681 is a deficient number, since it is larger than the sum of its proper divisors (1).

45113681 is an equidigital number, since it uses as much as digits as its factorization.

45113681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 29.

The square root of 45113681 is about 6716.6718693115. The cubic root of 45113681 is about 355.9885979810.

It can be divided in two parts, 4511 and 3681, that added together give a 13-th power (8192 = 2¹³).

The spelling of 45113681 in words is "forty-five million, one hundred thirteen thousand, six hundred eighty-one".