45231491 has 8 divisors (see below), whose sum is σ = 45878400. Its totient is φ = 44587840.

The previous prime is 45231479. The next prime is 45231497. The reversal of 45231491 is 19413254.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45231491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45231497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42101 + ... + 43161.

It is an arithmetic number, because the mean of its divisors is an integer number (5734800).

Almost surely, 2^45231491 is an apocalyptic number.

45231491 is a deficient number, since it is larger than the sum of its proper divisors (646909).

45231491 is a wasteful number, since it uses less digits than its factorization.

45231491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1629.

The product of its digits is 4320, while the sum is 29.

The square root of 45231491 is about 6725.4361196877. The cubic root of 45231491 is about 356.2982051934.

The spelling of 45231491 in words is "forty-five million, two hundred thirty-one thousand, four hundred ninety-one".