45216493 has 4 divisors (see below), whose sum is σ = 51676000. Its totient is φ = 38756988.

The previous prime is 45216469. The next prime is 45216499. The reversal of 45216493 is 39461254.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 45216493 - 2¹³ = 45208301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45216499) 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, 3229743 + ... + 3229756.

It is an arithmetic number, because the mean of its divisors is an integer number (12919000).

Almost surely, 2^45216493 is an apocalyptic number.

It is an amenable number.

45216493 is a deficient number, since it is larger than the sum of its proper divisors (6459507).

45216493 is an equidigital number, since it uses as much as digits as its factorization.

45216493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6459506.

The product of its digits is 25920, while the sum is 34.

The square root of 45216493 is about 6724.3210066147. The cubic root of 45216493 is about 356.2588200135.

The spelling of 45216493 in words is "forty-five million, two hundred sixteen thousand, four hundred ninety-three".