45032881 has 16 divisors (see below), whose sum is σ = 49051008. Its totient is φ = 41184000.

The previous prime is 45032857. The next prime is 45032887. The reversal of 45032881 is 18823054.

It is a cyclic number.

It is not a de Polignac number, because 45032881 - 2⁵ = 45032849 is a prime.

It is a super-2 number, since 2×45032881² = 4055920742320322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45032887) 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, 135886 + ... + 136216.

It is an arithmetic number, because the mean of its divisors is an integer number (3065688).

Almost surely, 2^45032881 is an apocalyptic number.

It is an amenable number.

45032881 is a deficient number, since it is larger than the sum of its proper divisors (4018127).

45032881 is a wasteful number, since it uses less digits than its factorization.

45032881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 45032881 is about 6710.6542900078. The cubic root of 45032881 is about 355.7759421043.

The spelling of 45032881 in words is "forty-five million, thirty-two thousand, eight hundred eighty-one".