45209538 has 24 divisors (see below), whose sum is σ = 106859376. Its totient is φ = 13699800.

The previous prime is 45209497. The next prime is 45209599. The reversal of 45209538 is 83590254.

It is a super-3 number, since 3×45209538³ (a number of 24 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 113968 + ... + 114363.

It is an arithmetic number, because the mean of its divisors is an integer number (4452474).

Almost surely, 2^45209538 is an apocalyptic number.

45209538 is an abundant number, since it is smaller than the sum of its proper divisors (61649838).

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

45209538 is a wasteful number, since it uses less digits than its factorization.

45209538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228350 (or 228347 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 45209538 is about 6723.8038341403. The cubic root of 45209538 is about 356.2405530274.

The spelling of 45209538 in words is "forty-five million, two hundred nine thousand, five hundred thirty-eight".