37087121 has 4 divisors (see below), whose sum is σ = 37786932. Its totient is φ = 36387312.

The previous prime is 37087111. The next prime is 37087123. The reversal of 37087121 is 12178073.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12178073 = 43 ⋅283211.

It can be written as a sum of positive squares in 2 ways, for example, as 8880400 + 28206721 = 2980^2 + 5311^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-37087121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (37087123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 349826 + ... + 349931.

It is an arithmetic number, because the mean of its divisors is an integer number (9446733).

Almost surely, 2^37087121 is an apocalyptic number.

It is an amenable number.

37087121 is a deficient number, since it is larger than the sum of its proper divisors (699811).

37087121 is an equidigital number, since it uses as much as digits as its factorization.

37087121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699810.

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 37087121 is about 6089.9196218013. The cubic root of 37087121 is about 333.4835175462.

The spelling of 37087121 in words is "thirty-seven million, eighty-seven thousand, one hundred twenty-one".