45511538 has 16 divisors (see below), whose sum is σ = 69660000. Its totient is φ = 22294272.

The previous prime is 45511483. The next prime is 45511547. The reversal of 45511538 is 83511554.

It is a super-2 number, since 2×45511538² = 4142600182250888, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52553 + ... + 53411.

It is an arithmetic number, because the mean of its divisors is an integer number (4353750).

Almost surely, 2^45511538 is an apocalyptic number.

45511538 is a deficient number, since it is larger than the sum of its proper divisors (24148462).

45511538 is a wasteful number, since it uses less digits than its factorization.

45511538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1369.

The product of its digits is 12000, while the sum is 32.

The square root of 45511538 is about 6746.2239808651. The cubic root of 45511538 is about 357.0320230097.

The spelling of 45511538 in words is "forty-five million, five hundred eleven thousand, five hundred thirty-eight".