45331881 has 16 divisors (see below), whose sum is σ = 69335424. Its totient is φ = 25807104.

The previous prime is 45331849. The next prime is 45331903. The reversal of 45331881 is 18813354.

It is not a de Polignac number, because 45331881 - 2⁵ = 45331849 is a prime.

It is a super-2 number, since 2×45331881² = 4109958869996322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (45331831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1921 + ... + 9713.

It is an arithmetic number, because the mean of its divisors is an integer number (4333464).

Almost surely, 2^45331881 is an apocalyptic number.

It is an amenable number.

45331881 is a deficient number, since it is larger than the sum of its proper divisors (24003543).

45331881 is a wasteful number, since it uses less digits than its factorization.

45331881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8080.

The product of its digits is 11520, while the sum is 33.

The square root of 45331881 is about 6732.8954395564. The cubic root of 45331881 is about 356.5616083078.

The spelling of 45331881 in words is "forty-five million, three hundred thirty-one thousand, eight hundred eighty-one".