45557666 has 48 divisors (see below), whose sum is σ = 89017920. Its totient is φ = 16968000.

The previous prime is 45557663. The next prime is 45557669. The reversal of 45557666 is 66675554.

It is an interprime number because it is at equal distance from previous prime (45557663) and next prime (45557669).

Its product of digits (756000) is a multiple of the sum of its prime divisors (150).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45557663) 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, 451016 + ... + 451116.

It is an arithmetic number, because the mean of its divisors is an integer number (1854540).

Almost surely, 2^45557666 is an apocalyptic number.

45557666 is a deficient number, since it is larger than the sum of its proper divisors (43460254).

45557666 is a wasteful number, since it uses less digits than its factorization.

45557666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251 (or 150 counting only the distinct ones).

The product of its digits is 756000, while the sum is 44.

The square root of 45557666 is about 6749.6419164279. The cubic root of 45557666 is about 357.1526049758.

It can be divided in two parts, 4555 and 7666, that added together give a palindrome (12221).

The spelling of 45557666 in words is "forty-five million, five hundred fifty-seven thousand, six hundred sixty-six".