45870581 has 4 divisors (see below), whose sum is σ = 45884352. Its totient is φ = 45856812.

The previous prime is 45870569. The next prime is 45870589. The reversal of 45870581 is 18507854.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 45870581 - 2¹⁰ = 45869557 is a prime.

It is a super-2 number, since 2×45870581² = 4208220402555122, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45870589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1586 + ... + 9708.

It is an arithmetic number, because the mean of its divisors is an integer number (11471088).

Almost surely, 2^45870581 is an apocalyptic number.

It is an amenable number.

45870581 is a deficient number, since it is larger than the sum of its proper divisors (13771).

45870581 is an equidigital number, since it uses as much as digits as its factorization.

45870581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13770.

The product of its (nonzero) digits is 44800, while the sum is 38.

The square root of 45870581 is about 6772.7823676832. The cubic root of 45870581 is about 357.9684464975.

The spelling of 45870581 in words is "forty-five million, eight hundred seventy thousand, five hundred eighty-one".