45856391 has 4 divisors (see below), whose sum is σ = 52407312. Its totient is φ = 39305472.

The previous prime is 45856387. The next prime is 45856423. The reversal of 45856391 is 19365854.

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 45856391 - 2² = 45856387 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 (45856351) 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, 3275450 + ... + 3275463.

It is an arithmetic number, because the mean of its divisors is an integer number (13101828).

Almost surely, 2^45856391 is an apocalyptic number.

45856391 is a deficient number, since it is larger than the sum of its proper divisors (6550921).

45856391 is an equidigital number, since it uses as much as digits as its factorization.

45856391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6550920.

The product of its digits is 129600, while the sum is 41.

The square root of 45856391 is about 6771.7347112834. The cubic root of 45856391 is about 357.9315303447.

The spelling of 45856391 in words is "forty-five million, eight hundred fifty-six thousand, three hundred ninety-one".