45661405 has 16 divisors (see below), whose sum is σ = 58261680. Its totient is φ = 34235392.

The previous prime is 45661391. The next prime is 45661471. The reversal of 45661405 is 50416654.

It can be written as a sum of positive squares in 8 ways, for example, as 10484644 + 35176761 = 3238^2 + 5931^2 .

It is a cyclic number.

It is not a de Polignac number, because 45661405 - 2⁹ = 45660893 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21867 + ... + 23863.

It is an arithmetic number, because the mean of its divisors is an integer number (3641355).

Almost surely, 2^45661405 is an apocalyptic number.

It is an amenable number.

45661405 is a deficient number, since it is larger than the sum of its proper divisors (12600275).

45661405 is a wasteful number, since it uses less digits than its factorization.

45661405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2288.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 45661405 is about 6757.3223247082. The cubic root of 45661405 is about 357.4234892585.

The spelling of 45661405 in words is "forty-five million, six hundred sixty-one thousand, four hundred five".