45523881 has 24 divisors (see below), whose sum is σ = 73262280. Its totient is φ = 27046656.

The previous prime is 45523879. The next prime is 45523897. The reversal of 45523881 is 18832554.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 968256 + 44555625 = 984^2 + 6675^2 .

It is not a de Polignac number, because 45523881 - 2¹ = 45523879 is a prime.

It is a super-2 number, since 2×45523881² = 4144847482604322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (45523811) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3316 + ... + 10101.

It is an arithmetic number, because the mean of its divisors is an integer number (3052595).

Almost surely, 2^45523881 is an apocalyptic number.

It is an amenable number.

45523881 is a deficient number, since it is larger than the sum of its proper divisors (27738399).

45523881 is a wasteful number, since it uses less digits than its factorization.

45523881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13465 (or 13462 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

The square root of 45523881 is about 6747.1387268975. The cubic root of 45523881 is about 357.0642964955.

It can be divided in two parts, 455 and 23881, that added together give a square (24336 = 156²).

The spelling of 45523881 in words is "forty-five million, five hundred twenty-three thousand, eight hundred eighty-one".