45557989 has 8 divisors (see below), whose sum is σ = 46895648. Its totient is φ = 44226000.

The previous prime is 45557983. The next prime is 45557999. The reversal of 45557989 is 98975554.

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 45557989 - 2²³ = 37169381 is a prime.

It is a Duffinian number.

Its product of digits (2268000) is a multiple of the sum of its prime divisors (2835).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45557983) 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, 19114 + ... + 21364.

It is an arithmetic number, because the mean of its divisors is an integer number (5861956).

Almost surely, 2^45557989 is an apocalyptic number.

It is an amenable number.

45557989 is a deficient number, since it is larger than the sum of its proper divisors (1337659).

45557989 is a wasteful number, since it uses less digits than its factorization.

45557989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2835.

The product of its digits is 2268000, while the sum is 52.

The square root of 45557989 is about 6749.6658435807. The cubic root of 45557989 is about 357.1534490344.

It can be divided in two parts, 4555 and 7989, that added together give a square (12544 = 112²).

The spelling of 45557989 in words is "forty-five million, five hundred fifty-seven thousand, nine hundred eighty-nine".