37121081 has 4 divisors (see below), whose sum is σ = 39304692. Its totient is φ = 34937472.

The previous prime is 37121069. The next prime is 37121093. The reversal of 37121081 is 18012173.

It is a happy number.

37121081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (37121069) and next prime (37121093).

It can be written as a sum of positive squares in 2 ways, for example, as 25452025 + 11669056 = 5045^2 + 3416^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-37121081 is a prime.

It is a super-2 number, since 2×37121081² = 2755949309217122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (37120081) 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 3 ways as a sum of consecutive naturals, for example, 1091780 + ... + 1091813.

It is an arithmetic number, because the mean of its divisors is an integer number (9826173).

Almost surely, 2^37121081 is an apocalyptic number.

It is an amenable number.

37121081 is a deficient number, since it is larger than the sum of its proper divisors (2183611).

37121081 is a wasteful number, since it uses less digits than its factorization.

37121081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2183610.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 37121081 is about 6092.7071979540. The cubic root of 37121081 is about 333.5852747508.

The spelling of 37121081 in words is "thirty-seven million, one hundred twenty-one thousand, eighty-one".