45018997 has 4 divisors (see below), whose sum is σ = 45976896. Its totient is φ = 44061100.

The previous prime is 45018949. The next prime is 45019001. The reversal of 45018997 is 79981054.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45018997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45018917) 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, 478879 + ... + 478972.

It is an arithmetic number, because the mean of its divisors is an integer number (11494224).

Almost surely, 2^45018997 is an apocalyptic number.

45018997 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

It is an amenable number.

45018997 is a deficient number, since it is larger than the sum of its proper divisors (957899).

45018997 is an equidigital number, since it uses as much as digits as its factorization.

45018997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957898.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 45018997 is about 6709.6197358718. The cubic root of 45018997 is about 355.7393754830.

The spelling of 45018997 in words is "forty-five million, eighteen thousand, nine hundred ninety-seven".