45409554 has 12 divisors (see below), whose sum is σ = 98387406. Its totient is φ = 15136512.

The previous prime is 45409547. The next prime is 45409561. The reversal of 45409554 is 45590454.

It is an interprime number because it is at equal distance from previous prime (45409547) and next prime (45409561).

It can be written as a sum of positive squares in only one way, i.e., 43204329 + 2205225 = 6573^2 + 1485^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1261359 + ... + 1261394.

Almost surely, 2^45409554 is an apocalyptic number.

45409554 is an abundant number, since it is smaller than the sum of its proper divisors (52977852).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45409554 is a wasteful number, since it uses less digits than its factorization.

45409554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2522761 (or 2522758 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The square root of 45409554 is about 6738.6611429868. The cubic root of 45409554 is about 356.7651398791.

The spelling of 45409554 in words is "forty-five million, four hundred nine thousand, five hundred fifty-four".