45198947 has 4 divisors (see below), whose sum is σ = 45234336. Its totient is φ = 45163560.

The previous prime is 45198931. The next prime is 45198949. The reversal of 45198947 is 74989154.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 45198947 - 2⁴ = 45198931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45198949) 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, 15704 + ... + 18357.

It is an arithmetic number, because the mean of its divisors is an integer number (11308584).

Almost surely, 2^45198947 is an apocalyptic number.

45198947 is a deficient number, since it is larger than the sum of its proper divisors (35389).

45198947 is a wasteful number, since it uses less digits than its factorization.

45198947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35388.

The product of its digits is 362880, while the sum is 47.

The square root of 45198947 is about 6723.0162129806. The cubic root of 45198947 is about 356.2127326564.

The spelling of 45198947 in words is "forty-five million, one hundred ninety-eight thousand, nine hundred forty-seven".