45853991 has 4 divisors (see below), whose sum is σ = 47333184. Its totient is φ = 44374800.

The previous prime is 45853987. The next prime is 45854023. The reversal of 45853991 is 19935854.

It is a happy number.

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 45853991 - 2² = 45853987 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 (45853921) 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, 739550 + ... + 739611.

It is an arithmetic number, because the mean of its divisors is an integer number (11833296).

Almost surely, 2^45853991 is an apocalyptic number.

45853991 is a deficient number, since it is larger than the sum of its proper divisors (1479193).

45853991 is a wasteful number, since it uses less digits than its factorization.

45853991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1479192.

The product of its digits is 194400, while the sum is 44.

The square root of 45853991 is about 6771.5575017864. The cubic root of 45853991 is about 357.9252858450.

The spelling of 45853991 in words is "forty-five million, eight hundred fifty-three thousand, nine hundred ninety-one".