45665554 has 16 divisors (see below), whose sum is σ = 76549536. Its totient is φ = 20250400.

The previous prime is 45665549. The next prime is 45665561. The reversal of 45665554 is 45556654.

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, 24412 + ... + 26215.

It is an arithmetic number, because the mean of its divisors is an integer number (4784346).

Almost surely, 2^45665554 is an apocalyptic number.

45665554 is a deficient number, since it is larger than the sum of its proper divisors (30883982).

45665554 is a wasteful number, since it uses less digits than its factorization.

45665554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50681.

The product of its digits is 360000, while the sum is 40.

The square root of 45665554 is about 6757.6293180375. The cubic root of 45665554 is about 357.4343146310.

Subtracting from 45665554 its reverse (45556654), we obtain a square (108900 = 330²).

It can be divided in two parts, 45 and 665554, that multiplied together give a triangular number (29949930 = T₇₇₃₉).

The spelling of 45665554 in words is "forty-five million, six hundred sixty-five thousand, five hundred fifty-four".