45722581 has 4 divisors (see below), whose sum is σ = 46497600. Its totient is φ = 44947564.

The previous prime is 45722563. The next prime is 45722617. The reversal of 45722581 is 18522754.

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 45722581 - 2²¹ = 43625429 is a prime.

It is a super-2 number, since 2×45722581² = 4181108826603122, 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 (45722561) 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, 387421 + ... + 387538.

It is an arithmetic number, because the mean of its divisors is an integer number (11624400).

Almost surely, 2^45722581 is an apocalyptic number.

It is an amenable number.

45722581 is a deficient number, since it is larger than the sum of its proper divisors (775019).

45722581 is an equidigital number, since it uses as much as digits as its factorization.

45722581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775018.

The product of its digits is 22400, while the sum is 34.

The square root of 45722581 is about 6761.8474546532. The cubic root of 45722581 is about 357.5830403542.

The spelling of 45722581 in words is "forty-five million, seven hundred twenty-two thousand, five hundred eighty-one".