37973121 has 16 divisors (see below), whose sum is σ = 54414144. Its totient is φ = 23468544.

The previous prime is 37973083. The next prime is 37973141. The reversal of 37973121 is 12137973.

It is a happy number.

It is not a de Polignac number, because 37973121 - 2²¹ = 35875969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (37973141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2140 + ... + 8973.

It is an arithmetic number, because the mean of its divisors is an integer number (3400884).

Almost surely, 2^37973121 is an apocalyptic number.

It is an amenable number.

37973121 is a deficient number, since it is larger than the sum of its proper divisors (16441023).

37973121 is a wasteful number, since it uses less digits than its factorization.

37973121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11200.

The product of its digits is 7938, while the sum is 33.

The square root of 37973121 is about 6162.2334425109. The cubic root of 37973121 is about 336.1182530904.

The spelling of 37973121 in words is "thirty-seven million, nine hundred seventy-three thousand, one hundred twenty-one".