10037721 has 4 divisors (see below), whose sum is σ = 13383632. Its totient is φ = 6691812.

The previous prime is 10037663. The next prime is 10037749. The reversal of 10037721 is 12773001.

10037721 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 10037721 - 2⁷ = 10037593 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10030721) 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, 1672951 + ... + 1672956.

It is an arithmetic number, because the mean of its divisors is an integer number (3345908).

Almost surely, 2^10037721 is an apocalyptic number.

It is an amenable number.

10037721 is a deficient number, since it is larger than the sum of its proper divisors (3345911).

10037721 is an equidigital number, since it uses as much as digits as its factorization.

10037721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3345910.

The product of its (nonzero) digits is 294, while the sum is 21.

The square root of 10037721 is about 3168.2362601296. The cubic root of 10037721 is about 215.7140205418.

The spelling of 10037721 in words is "ten million, thirty-seven thousand, seven hundred twenty-one".