45551985 has 8 divisors (see below), whose sum is σ = 72883200. Its totient is φ = 24294384.

The previous prime is 45551981. The next prime is 45551999. The reversal of 45551985 is 58915554.

It is a happy number.

45551985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 45551985 - 2² = 45551981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45551981) 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, 1518385 + ... + 1518414.

It is an arithmetic number, because the mean of its divisors is an integer number (9110400).

Almost surely, 2^45551985 is an apocalyptic number.

It is an amenable number.

45551985 is a deficient number, since it is larger than the sum of its proper divisors (27331215).

45551985 is a wasteful number, since it uses less digits than its factorization.

45551985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3036807.

The product of its digits is 180000, while the sum is 42.

The square root of 45551985 is about 6749.2210661676. The cubic root of 45551985 is about 357.1377588225.

The spelling of 45551985 in words is "forty-five million, five hundred fifty-one thousand, nine hundred eighty-five".