45459091 has 4 divisors (see below), whose sum is σ = 46204384. Its totient is φ = 44713800.

The previous prime is 45459083. The next prime is 45459097. The reversal of 45459091 is 19095454.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 45459091 - 2³ = 45459083 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 45459091.

It is not an unprimeable number, because it can be changed into a prime (45459097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 372555 + ... + 372676.

It is an arithmetic number, because the mean of its divisors is an integer number (11551096).

Almost surely, 2^45459091 is an apocalyptic number.

45459091 is a deficient number, since it is larger than the sum of its proper divisors (745293).

45459091 is an equidigital number, since it uses as much as digits as its factorization.

45459091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745292.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 45459091 is about 6742.3357228782. The cubic root of 45459091 is about 356.8948236908.

Adding to 45459091 its product of nonzero digits (32400), we get a triangular number (45491491 = T₉₅₃₈).

It can be divided in two parts, 4545 and 9091, that multiplied together give a triangular number (41318595 = T₉₀₉₀).

The spelling of 45459091 in words is "forty-five million, four hundred fifty-nine thousand, ninety-one".