45871581 has 8 divisors (see below), whose sum is σ = 69899584. Its totient is φ = 26212320.

The previous prime is 45871571. The next prime is 45871603. The reversal of 45871581 is 18517854.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 45871581 - 2⁶ = 45871517 is a prime.

It is a super-2 number, since 2×45871581² = 4208403886879122, 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 (45871531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1092160 + ... + 1092201.

It is an arithmetic number, because the mean of its divisors is an integer number (8737448).

Almost surely, 2^45871581 is an apocalyptic number.

It is an amenable number.

45871581 is a deficient number, since it is larger than the sum of its proper divisors (24028003).

45871581 is a wasteful number, since it uses less digits than its factorization.

45871581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2184371.

The product of its digits is 44800, while the sum is 39.

The square root of 45871581 is about 6772.8561921836. The cubic root of 45871581 is about 357.9710477715.

The spelling of 45871581 in words is "forty-five million, eight hundred seventy-one thousand, five hundred eighty-one".