45397 has 4 divisors (see below), whose sum is σ = 49536. Its totient is φ = 41260.

The previous prime is 45389. The next prime is 45403. The reversal of 45397 is 79354.

45397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 45397 - 2³ = 45389 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45307) 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, 2053 + ... + 2074.

It is an arithmetic number, because the mean of its divisors is an integer number (12384).

2⁴⁵³⁹⁷ is an apocalyptic number.

It is an amenable number.

45397 is a deficient number, since it is larger than the sum of its proper divisors (4139).

45397 is a wasteful number, since it uses less digits than its factorization.

45397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4138.

The product of its digits is 3780, while the sum is 28.

The square root of 45397 is about 213.0657175615. The cubic root of 45397 is about 35.6732259556.

Subtracting from 45397 its sum of digits (28), we obtain a square (45369 = 213²).

The spelling of 45397 in words is "forty-five thousand, three hundred ninety-seven".