45447540 has 48 divisors (see below), whose sum is σ = 132789888. Its totient is φ = 11592064.

The previous prime is 45447509. The next prime is 45447551. The reversal of 45447540 is 4574454.

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, 15087 + ... + 17846.

It is an arithmetic number, because the mean of its divisors is an integer number (2766456).

Almost surely, 2^45447540 is an apocalyptic number.

It is an amenable number.

45447540 is an abundant number, since it is smaller than the sum of its proper divisors (87342348).

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

45447540 is a wasteful number, since it uses less digits than its factorization.

45447540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32968 (or 32966 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 33.

The square root of 45447540 is about 6741.4790661990. The cubic root of 45447540 is about 356.8645925442.

The spelling of 45447540 in words is "forty-five million, four hundred forty-seven thousand, five hundred forty".