45213613 has 2 divisors, whose sum is σ = 45213614. Its totient is φ = 45213612.

The previous prime is 45213589. The next prime is 45213629. The reversal of 45213613 is 31631254.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45198729 + 14884 = 6723^2 + 122^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45213613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45213913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22606806 + 22606807.

It is an arithmetic number, because the mean of its divisors is an integer number (22606807).

Almost surely, 2^45213613 is an apocalyptic number.

It is an amenable number.

45213613 is a deficient number, since it is larger than the sum of its proper divisors (1).

45213613 is an equidigital number, since it uses as much as digits as its factorization.

45213613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 25.

The square root of 45213613 is about 6724.1068551890. The cubic root of 45213613 is about 356.2512560538.

Adding to 45213613 its reverse (31631254), we get a palindrome (76844867).

The spelling of 45213613 in words is "forty-five million, two hundred thirteen thousand, six hundred thirteen".