45198961 has 4 divisors (see below), whose sum is σ = 46657024. Its totient is φ = 43740900.

The previous prime is 45198949. The next prime is 45198973. The reversal of 45198961 is 16989154.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (45198949) and next prime (45198973).

It is a cyclic number.

It is not a de Polignac number, because 45198961 - 2⁹ = 45198449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45198911) 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, 728985 + ... + 729046.

It is an arithmetic number, because the mean of its divisors is an integer number (11664256).

Almost surely, 2^45198961 is an apocalyptic number.

It is an amenable number.

45198961 is a deficient number, since it is larger than the sum of its proper divisors (1458063).

45198961 is a wasteful number, since it uses less digits than its factorization.

45198961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1458062.

The product of its digits is 77760, while the sum is 43.

The square root of 45198961 is about 6723.0172541799. The cubic root of 45198961 is about 356.2127694344.

The spelling of 45198961 in words is "forty-five million, one hundred ninety-eight thousand, nine hundred sixty-one".