45442155 has 24 divisors (see below), whose sum is σ = 79921296. Its totient is φ = 22031680.

The previous prime is 45442123. The next prime is 45442157. The reversal of 45442155 is 55124454.

It is not a de Polignac number, because 45442155 - 2⁵ = 45442123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45442157) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10704 + ... + 14333.

It is an arithmetic number, because the mean of its divisors is an integer number (3330054).

Almost surely, 2^45442155 is an apocalyptic number.

45442155 is a deficient number, since it is larger than the sum of its proper divisors (34479141).

45442155 is a wasteful number, since it uses less digits than its factorization.

45442155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25067 (or 25056 counting only the distinct ones).

The product of its digits is 16000, while the sum is 30.

The square root of 45442155 is about 6741.0796613006. The cubic root of 45442155 is about 356.8504972325.

The spelling of 45442155 in words is "forty-five million, four hundred forty-two thousand, one hundred fifty-five".