45193747 has 4 divisors (see below), whose sum is σ = 45330616. Its totient is φ = 45056880.

The previous prime is 45193721. The next prime is 45193751. The reversal of 45193747 is 74739154.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45193747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45193147) 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, 67938 + ... + 68599.

It is an arithmetic number, because the mean of its divisors is an integer number (11332654).

Almost surely, 2^45193747 is an apocalyptic number.

45193747 is a deficient number, since it is larger than the sum of its proper divisors (136869).

45193747 is a wasteful number, since it uses less digits than its factorization.

45193747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136868.

The product of its digits is 105840, while the sum is 40.

The square root of 45193747 is about 6722.6294706759. The cubic root of 45193747 is about 356.1990717390.

The spelling of 45193747 in words is "forty-five million, one hundred ninety-three thousand, seven hundred forty-seven".