45566440 has 32 divisors (see below), whose sum is σ = 102717000. Its totient is φ = 18192384.

The previous prime is 45566431. The next prime is 45566441. The reversal of 45566440 is 4466554.

It can be written as a sum of positive squares in 4 ways, for example, as 21771556 + 23794884 = 4666^2 + 4878^2 .

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 45566396 and 45566405.

It is not an unprimeable number, because it can be changed into a prime (45566441) 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, 39796 + ... + 40924.

Almost surely, 2^45566440 is an apocalyptic number.

45566440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45566440 is an abundant number, since it is smaller than the sum of its proper divisors (57150560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45566440 is a wasteful number, since it uses less digits than its factorization.

45566440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2149 (or 2145 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 34.

The square root of 45566440 is about 6750.2918455427. The cubic root of 45566440 is about 357.1755316391.

The spelling of 45566440 in words is "forty-five million, five hundred sixty-six thousand, four hundred forty".