45081985 has 8 divisors (see below), whose sum is σ = 58259880. Its totient is φ = 33291264.

The previous prime is 45081961. The next prime is 45081991. The reversal of 45081985 is 58918054.

It can be written as a sum of positive squares in 4 ways, for example, as 3814209 + 41267776 = 1953^2 + 6424^2 .

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 45081985 - 2⁷ = 45081857 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 346720 + ... + 346849.

It is an arithmetic number, because the mean of its divisors is an integer number (7282485).

Almost surely, 2^45081985 is an apocalyptic number.

It is an amenable number.

45081985 is a deficient number, since it is larger than the sum of its proper divisors (13177895).

45081985 is a wasteful number, since it uses less digits than its factorization.

45081985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693587.

The product of its (nonzero) digits is 57600, while the sum is 40.

The square root of 45081985 is about 6714.3119528363. The cubic root of 45081985 is about 355.9052082133.

The spelling of 45081985 in words is "forty-five million, eighty-one thousand, nine hundred eighty-five".