45615917 has 4 divisors (see below), whose sum is σ = 45643776. Its totient is φ = 45588060.

The previous prime is 45615901. The next prime is 45615929. The reversal of 45615917 is 71951654.

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, and also an emirpimes, since its reverse is a distinct semiprime: 71951654 = 2 ⋅35975827.

It is a cyclic number.

It is not a de Polignac number, because 45615917 - 2⁴ = 45615901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45615937) 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, 11309 + ... + 14802.

It is an arithmetic number, because the mean of its divisors is an integer number (11410944).

Almost surely, 2^45615917 is an apocalyptic number.

It is an amenable number.

45615917 is a deficient number, since it is larger than the sum of its proper divisors (27859).

45615917 is a wasteful number, since it uses less digits than its factorization.

45615917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27858.

The product of its digits is 37800, while the sum is 38.

The square root of 45615917 is about 6753.9556557620. The cubic root of 45615917 is about 357.3047611147.

The spelling of 45615917 in words is "forty-five million, six hundred fifteen thousand, nine hundred seventeen".