37521985 has 8 divisors (see below), whose sum is σ = 45127656. Its totient is φ = 29950080.

The previous prime is 37521961. The next prime is 37522019. The reversal of 37521985 is 58912573.

It can be written as a sum of positive squares in 4 ways, for example, as 1245456 + 36276529 = 1116^2 + 6023^2 .

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

It is not a de Polignac number, because 37521985 - 2⁷ = 37521857 is a prime.

It is a Duffinian number.

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, 5926 + ... + 10495.

It is an arithmetic number, because the mean of its divisors is an integer number (5640957).

Almost surely, 2^37521985 is an apocalyptic number.

It is an amenable number.

37521985 is a deficient number, since it is larger than the sum of its proper divisors (7605671).

37521985 is a wasteful number, since it uses less digits than its factorization.

37521985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16883.

The product of its digits is 75600, while the sum is 40.

The square root of 37521985 is about 6125.5191616711. The cubic root of 37521985 is about 334.7818732998.

The spelling of 37521985 in words is "thirty-seven million, five hundred twenty-one thousand, nine hundred eighty-five".