45445657 has 8 divisors (see below), whose sum is σ = 47139912. Its totient is φ = 43776000.

The previous prime is 45445649. The next prime is 45445679. The reversal of 45445657 is 75654454.

It is a happy number.

45445657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 22174681 + 23270976 = 4709^2 + 4824^2 .

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 45445657 - 2³ = 45445649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45445157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2344 + ... + 9817.

It is an arithmetic number, because the mean of its divisors is an integer number (5892489).

Almost surely, 2^45445657 is an apocalyptic number.

It is an amenable number.

45445657 is a deficient number, since it is larger than the sum of its proper divisors (1694255).

45445657 is a wasteful number, since it uses less digits than its factorization.

45445657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12299.

The product of its digits is 336000, while the sum is 40.

The square root of 45445657 is about 6741.3394069725. The cubic root of 45445657 is about 356.8596638924.

It can be divided in two parts, 4544 and 5657, that added together give a palindrome (10201).

The spelling of 45445657 in words is "forty-five million, four hundred forty-five thousand, six hundred fifty-seven".