45231397 has 4 divisors (see below), whose sum is σ = 45461196. Its totient is φ = 45001600.

The previous prime is 45231383. The next prime is 45231413. The reversal of 45231397 is 79313254.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79313254 = 2 ⋅39656627.

It can be written as a sum of positive squares in 2 ways, for example, as 43678881 + 1552516 = 6609^2 + 1246^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45231397 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 (45231337) 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, 114604 + ... + 114997.

It is an arithmetic number, because the mean of its divisors is an integer number (11365299).

Almost surely, 2^45231397 is an apocalyptic number.

It is an amenable number.

45231397 is a deficient number, since it is larger than the sum of its proper divisors (229799).

45231397 is a wasteful number, since it uses less digits than its factorization.

45231397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229798.

The product of its digits is 22680, while the sum is 34.

The square root of 45231397 is about 6725.4291312897. The cubic root of 45231397 is about 356.2979583738.

The spelling of 45231397 in words is "forty-five million, two hundred thirty-one thousand, three hundred ninety-seven".