45409057 has 4 divisors (see below), whose sum is σ = 48080196. Its totient is φ = 42737920.

The previous prime is 45409043. The next prime is 45409087. The reversal of 45409057 is 75090454.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12702096 + 32706961 = 3564^2 + 5719^2 .

It is a cyclic number.

It is not a de Polignac number, because 45409057 - 2⁷ = 45408929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45409037) 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, 1335544 + ... + 1335577.

It is an arithmetic number, because the mean of its divisors is an integer number (12020049).

Almost surely, 2^45409057 is an apocalyptic number.

It is an amenable number.

45409057 is a deficient number, since it is larger than the sum of its proper divisors (2671139).

45409057 is a wasteful number, since it uses less digits than its factorization.

45409057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2671138.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 45409057 is about 6738.6242661244. The cubic root of 45409057 is about 356.7638382961.

The spelling of 45409057 in words is "forty-five million, four hundred nine thousand, fifty-seven".