10437721 has 4 divisors (see below), whose sum is σ = 11928832. Its totient is φ = 8946612.

The previous prime is 10437719. The next prime is 10437733. The reversal of 10437721 is 12773401.

It is a happy number.

10437721 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, and also an emirpimes, since its reverse is a distinct semiprime: 12773401 = 1523 ⋅8387.

It is a cyclic number.

It is not a de Polignac number, because 10437721 - 2¹ = 10437719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10437751) 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, 745545 + ... + 745558.

It is an arithmetic number, because the mean of its divisors is an integer number (2982208).

Almost surely, 2^10437721 is an apocalyptic number.

It is an amenable number.

10437721 is a deficient number, since it is larger than the sum of its proper divisors (1491111).

10437721 is an equidigital number, since it uses as much as digits as its factorization.

10437721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1491110.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 10437721 is about 3230.7461986359. The cubic root of 10437721 is about 218.5421583949.

The spelling of 10437721 in words is "ten million, four hundred thirty-seven thousand, seven hundred twenty-one".