45179779 has 4 divisors (see below), whose sum is σ = 45432360. Its totient is φ = 44927200.

The previous prime is 45179753. The next prime is 45179789. The reversal of 45179779 is 97797154.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 45179779 - 2¹³ = 45171587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45179789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126022 + ... + 126379.

It is an arithmetic number, because the mean of its divisors is an integer number (11358090).

Almost surely, 2^45179779 is an apocalyptic number.

45179779 is a deficient number, since it is larger than the sum of its proper divisors (252581).

45179779 is a wasteful number, since it uses less digits than its factorization.

45179779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252580.

The product of its digits is 555660, while the sum is 49.

The square root of 45179779 is about 6721.5905111811. The cubic root of 45179779 is about 356.1623712245.

The spelling of 45179779 in words is "forty-five million, one hundred seventy-nine thousand, seven hundred seventy-nine".