37936221 has 8 divisors (see below), whose sum is σ = 50885184. Its totient is φ = 25139040.

The previous prime is 37936187. The next prime is 37936243. The reversal of 37936221 is 12263973.

It is a happy number.

37936221 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 37936221 - 2¹⁰ = 37935197 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (37936121) 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, 37360 + ... + 38361.

It is an arithmetic number, because the mean of its divisors is an integer number (6360648).

Almost surely, 2^37936221 is an apocalyptic number.

It is an amenable number.

37936221 is a deficient number, since it is larger than the sum of its proper divisors (12948963).

37936221 is a wasteful number, since it uses less digits than its factorization.

37936221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75891.

The product of its digits is 13608, while the sum is 33.

The square root of 37936221 is about 6159.2386704852. The cubic root of 37936221 is about 336.0093446239.

The spelling of 37936221 in words is "thirty-seven million, nine hundred thirty-six thousand, two hundred twenty-one".