45849581 has 4 divisors (see below), whose sum is σ = 46825152. Its totient is φ = 44874012.

The previous prime is 45849539. The next prime is 45849619. The reversal of 45849581 is 18594854.

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 a de Polignac number, because none of the positive numbers 2^k-45849581 is a prime.

It is a super-2 number, since 2×45849581² = 4204368155751122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45842581) 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, 487715 + ... + 487808.

It is an arithmetic number, because the mean of its divisors is an integer number (11706288).

Almost surely, 2^45849581 is an apocalyptic number.

It is an amenable number.

45849581 is a deficient number, since it is larger than the sum of its proper divisors (975571).

45849581 is an equidigital number, since it uses as much as digits as its factorization.

45849581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975570.

The product of its digits is 230400, while the sum is 44.

The square root of 45849581 is about 6771.2318672454. The cubic root of 45849581 is about 357.9138110088.

The spelling of 45849581 in words is "forty-five million, eight hundred forty-nine thousand, five hundred eighty-one".