45275778 has 12 divisors (see below), whose sum is σ = 98097558. Its totient is φ = 15091920.

The previous prime is 45275773. The next prime is 45275801. The reversal of 45275778 is 87757254.

45275778 is a `hidden beast` number, since 4 + 527 + 57 + 78 = 666.

It can be written as a sum of positive squares in only one way, i.e., 33558849 + 11716929 = 5793^2 + 3423^2 .

It is not an unprimeable number, because it can be changed into a prime (45275771) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1257643 + ... + 1257678.

Almost surely, 2^45275778 is an apocalyptic number.

45275778 is an abundant number, since it is smaller than the sum of its proper divisors (52821780).

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

45275778 is a wasteful number, since it uses less digits than its factorization.

45275778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2515329 (or 2515326 counting only the distinct ones).

The product of its digits is 548800, while the sum is 45.

The square root of 45275778 is about 6728.7278143792. The cubic root of 45275778 is about 356.4144533433.

The spelling of 45275778 in words is "forty-five million, two hundred seventy-five thousand, seven hundred seventy-eight".