45237997 has 4 divisors (see below), whose sum is σ = 51700576. Its totient is φ = 38775420.

The previous prime is 45237979. The next prime is 45238051. The reversal of 45237997 is 79973254.

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 not a de Polignac number, because 45237997 - 2¹⁹ = 44713709 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 (45237937) 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, 3231279 + ... + 3231292.

It is an arithmetic number, because the mean of its divisors is an integer number (12925144).

Almost surely, 2^45237997 is an apocalyptic number.

It is an amenable number.

45237997 is a deficient number, since it is larger than the sum of its proper divisors (6462579).

45237997 is an equidigital number, since it uses as much as digits as its factorization.

45237997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6462578.

The product of its digits is 476280, while the sum is 46.

The square root of 45237997 is about 6725.9197884007. The cubic root of 45237997 is about 356.3152874292.

The spelling of 45237997 in words is "forty-five million, two hundred thirty-seven thousand, nine hundred ninety-seven".