45478755 has 48 divisors (see below), whose sum is σ = 90567360. Its totient is φ = 20680704.

The previous prime is 45478753. The next prime is 45478787. The reversal of 45478755 is 55787454.

It is not a de Polignac number, because 45478755 - 2¹ = 45478753 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 45478755.

It is not an unprimeable number, because it can be changed into a prime (45478753) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 110991 + ... + 111399.

It is an arithmetic number, because the mean of its divisors is an integer number (1886820).

Almost surely, 2^45478755 is an apocalyptic number.

45478755 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

45478755 is a deficient number, since it is larger than the sum of its proper divisors (45088605).

45478755 is a wasteful number, since it uses less digits than its factorization.

45478755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780 (or 777 counting only the distinct ones).

The product of its digits is 784000, while the sum is 45.

The square root of 45478755 is about 6743.7938135741. The cubic root of 45478755 is about 356.9462763118.

The spelling of 45478755 in words is "forty-five million, four hundred seventy-eight thousand, seven hundred fifty-five".