45097231 has 4 divisors (see below), whose sum is σ = 45770392. Its totient is φ = 44424072.

The previous prime is 45097189. The next prime is 45097259. The reversal of 45097231 is 13279054.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13279054 = 2 ⋅6639527.

It is a cyclic number.

It is not a de Polignac number, because 45097231 - 2⁷ = 45097103 is a prime.

It is a super-2 number, since 2×45097231² = 4067520487734722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45097193 and 45097202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45097271) 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, 336480 + ... + 336613.

It is an arithmetic number, because the mean of its divisors is an integer number (11442598).

Almost surely, 2^45097231 is an apocalyptic number.

45097231 is a deficient number, since it is larger than the sum of its proper divisors (673161).

45097231 is an equidigital number, since it uses as much as digits as its factorization.

45097231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673160.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 45097231 is about 6715.4471928532. The cubic root of 45097231 is about 355.9453241579.

The spelling of 45097231 in words is "forty-five million, ninety-seven thousand, two hundred thirty-one".