45155091 has 4 divisors (see below), whose sum is σ = 60206792. Its totient is φ = 30103392.

The previous prime is 45155087. The next prime is 45155107. The reversal of 45155091 is 19055154.

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

It is not a de Polignac number, because 45155091 - 2² = 45155087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45155021) 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, 7525846 + ... + 7525851.

It is an arithmetic number, because the mean of its divisors is an integer number (15051698).

Almost surely, 2^45155091 is an apocalyptic number.

45155091 is a deficient number, since it is larger than the sum of its proper divisors (15051701).

45155091 is a wasteful number, since it uses less digits than its factorization.

45155091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15051700.

The product of its (nonzero) digits is 4500, while the sum is 30.

The square root of 45155091 is about 6719.7537901325. The cubic root of 45155091 is about 356.0974857167.

The spelling of 45155091 in words is "forty-five million, one hundred fifty-five thousand, ninety-one".