545661875 has 40 divisors (see below), whose sum is σ = 750509760. Its totient is φ = 393300000.

The previous prime is 545661863. The next prime is 545661877. The reversal of 545661875 is 578166545.

It is not a de Polignac number, because 545661875 - 2⁴ = 545661859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (545661877) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 955340 + ... + 955910.

It is an arithmetic number, because the mean of its divisors is an integer number (18762744).

Almost surely, 2^545661875 is an apocalyptic number.

545661875 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

545661875 is a deficient number, since it is larger than the sum of its proper divisors (204847885).

545661875 is a wasteful number, since it uses less digits than its factorization.

545661875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741 (or 726 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 47.

The square root of 545661875 is about 23359.4065635238. The cubic root of 545661875 is about 817.1614499055.

The spelling of 545661875 in words is "five hundred forty-five million, six hundred sixty-one thousand, eight hundred seventy-five".