45567881 has 4 divisors (see below), whose sum is σ = 45589572. Its totient is φ = 45546192.

The previous prime is 45567877. The next prime is 45567887. The reversal of 45567881 is 18876554.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18876554 = 2 ⋅9438277.

It can be written as a sum of positive squares in 2 ways, for example, as 27206656 + 18361225 = 5216^2 + 4285^2 .

It is a cyclic number.

It is not a de Polignac number, because 45567881 - 2² = 45567877 is a prime.

It is a super-2 number, since 2×45567881² = 4152863557660322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45567887) 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, 7310 + ... + 12023.

It is an arithmetic number, because the mean of its divisors is an integer number (11397393).

Almost surely, 2^45567881 is an apocalyptic number.

It is an amenable number.

45567881 is a deficient number, since it is larger than the sum of its proper divisors (21691).

45567881 is a wasteful number, since it uses less digits than its factorization.

45567881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21690.

The product of its digits is 268800, while the sum is 44.

The square root of 45567881 is about 6750.3985808247. The cubic root of 45567881 is about 357.1792967238.

The spelling of 45567881 in words is "forty-five million, five hundred sixty-seven thousand, eight hundred eighty-one".