45565531 has 8 divisors (see below), whose sum is σ = 50646384. Its totient is φ = 40641120.

The previous prime is 45565529. The next prime is 45565571. The reversal of 45565531 is 13556554.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 45565531 - 2¹ = 45565529 is a prime.

It is a super-2 number, since 2×45565531² = 4152435230623922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45565501) 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, 38496 + ... + 39661.

It is an arithmetic number, because the mean of its divisors is an integer number (6330798).

Almost surely, 2^45565531 is an apocalyptic number.

45565531 is a deficient number, since it is larger than the sum of its proper divisors (5080853).

45565531 is a wasteful number, since it uses less digits than its factorization.

45565531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78221.

The product of its digits is 45000, while the sum is 34.

The square root of 45565531 is about 6750.2245147847. The cubic root of 45565531 is about 357.1731565379.

It can be divided in two parts, 4556553 and 1, that added together give a palindrome (4556554).

The spelling of 45565531 in words is "forty-five million, five hundred sixty-five thousand, five hundred thirty-one".