45542555 has 4 divisors (see below), whose sum is σ = 54651072. Its totient is φ = 36434040.

The previous prime is 45542533. The next prime is 45542579. The reversal of 45542555 is 55524554.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55524554 = 2 ⋅27762277.

It is a de Polignac number, because none of the positive numbers 2^k-45542555 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4554251 + ... + 4554260.

It is an arithmetic number, because the mean of its divisors is an integer number (13662768).

Almost surely, 2^45542555 is an apocalyptic number.

45542555 is a deficient number, since it is larger than the sum of its proper divisors (9108517).

45542555 is an equidigital number, since it uses as much as digits as its factorization.

45542555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9108516.

The product of its digits is 100000, while the sum is 35.

The square root of 45542555 is about 6748.5224308733. The cubic root of 45542555 is about 357.1131126847.

The spelling of 45542555 in words is "forty-five million, five hundred forty-two thousand, five hundred fifty-five".