45491613 has 4 divisors (see below), whose sum is σ = 60655488. Its totient is φ = 30327740.

The previous prime is 45491603. The next prime is 45491623. The reversal of 45491613 is 31619454.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (45491603) and next prime (45491623).

It is a cyclic number.

It is not a de Polignac number, because 45491613 - 2⁸ = 45491357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45491603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7581933 + ... + 7581938.

It is an arithmetic number, because the mean of its divisors is an integer number (15163872).

Almost surely, 2^45491613 is an apocalyptic number.

It is an amenable number.

45491613 is a deficient number, since it is larger than the sum of its proper divisors (15163875).

45491613 is a wasteful number, since it uses less digits than its factorization.

45491613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15163874.

The product of its digits is 12960, while the sum is 33.

The square root of 45491613 is about 6744.7470671627. The cubic root of 45491613 is about 356.9799124038.

The spelling of 45491613 in words is "forty-five million, four hundred ninety-one thousand, six hundred thirteen".