45616561 has 8 divisors (see below), whose sum is σ = 46246464. Its totient is φ = 44990640.

The previous prime is 45616541. The next prime is 45616573. The reversal of 45616561 is 16561654.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 45616561 - 2⁷ = 45616433 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45616541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27331 + ... + 28951.

It is an arithmetic number, because the mean of its divisors is an integer number (5780808).

Almost surely, 2^45616561 is an apocalyptic number.

It is an amenable number.

45616561 is a deficient number, since it is larger than the sum of its proper divisors (629903).

45616561 is a wasteful number, since it uses less digits than its factorization.

45616561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1991.

The product of its digits is 21600, while the sum is 34.

The square root of 45616561 is about 6754.0033313584. The cubic root of 45616561 is about 357.3064425686.

The spelling of 45616561 in words is "forty-five million, six hundred sixteen thousand, five hundred sixty-one".