45195491 has 4 divisors (see below), whose sum is σ = 49304184. Its totient is φ = 41086800.

The previous prime is 45195481. The next prime is 45195523. The reversal of 45195491 is 19459154.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45195491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45195421) 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, 2054330 + ... + 2054351.

It is an arithmetic number, because the mean of its divisors is an integer number (12326046).

Almost surely, 2^45195491 is an apocalyptic number.

45195491 is a deficient number, since it is larger than the sum of its proper divisors (4108693).

45195491 is a wasteful number, since it uses less digits than its factorization.

45195491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4108692.

The product of its digits is 32400, while the sum is 38.

The square root of 45195491 is about 6722.7591805746. The cubic root of 45195491 is about 356.2036535173.

The spelling of 45195491 in words is "forty-five million, one hundred ninety-five thousand, four hundred ninety-one".