45442091 has 16 divisors (see below), whose sum is σ = 49320960. Its totient is φ = 41731200.

The previous prime is 45442069. The next prime is 45442097. The reversal of 45442091 is 19024454.

45442091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 45442091 - 2⁶ = 45442027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45442097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134675 + ... + 135011.

It is an arithmetic number, because the mean of its divisors is an integer number (3082560).

Almost surely, 2^45442091 is an apocalyptic number.

45442091 is a deficient number, since it is larger than the sum of its proper divisors (3878869).

45442091 is a wasteful number, since it uses less digits than its factorization.

45442091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 45442091 is about 6741.0749142848. The cubic root of 45442091 is about 356.8503297049.

The spelling of 45442091 in words is "forty-five million, four hundred forty-two thousand, ninety-one".