45179778 has 32 divisors (see below), whose sum is σ = 109344384. Its totient is φ = 12148992.

The previous prime is 45179753. The next prime is 45179789. The reversal of 45179778 is 87797154.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30925 + ... + 32352.

It is an arithmetic number, because the mean of its divisors is an integer number (3417012).

Almost surely, 2^45179778 is an apocalyptic number.

45179778 is an abundant number, since it is smaller than the sum of its proper divisors (64164606).

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

45179778 is a wasteful number, since it uses less digits than its factorization.

45179778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63306.

The product of its digits is 493920, while the sum is 48.

The square root of 45179778 is about 6721.5904367940. The cubic root of 45179778 is about 356.1623685968.

The spelling of 45179778 in words is "forty-five million, one hundred seventy-nine thousand, seven hundred seventy-eight".