45198523 has 8 divisors (see below), whose sum is σ = 46420416. Its totient is φ = 43982400.

The previous prime is 45198509. The next prime is 45198541. The reversal of 45198523 is 32589154.

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

It is a cyclic number.

It is not a de Polignac number, because 45198523 - 2²¹ = 43101371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45198553) 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, 17793 + ... + 20173.

It is an arithmetic number, because the mean of its divisors is an integer number (5802552).

Almost surely, 2^45198523 is an apocalyptic number.

45198523 is a deficient number, since it is larger than the sum of its proper divisors (1221893).

45198523 is a wasteful number, since it uses less digits than its factorization.

45198523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2885.

The product of its digits is 43200, while the sum is 37.

The square root of 45198523 is about 6722.9846794411. The cubic root of 45198523 is about 356.2116188055.

The spelling of 45198523 in words is "forty-five million, one hundred ninety-eight thousand, five hundred twenty-three".