10721481 has 4 divisors (see below), whose sum is σ = 14295312. Its totient is φ = 7147652.

The previous prime is 10721479. The next prime is 10721489. The reversal of 10721481 is 18412701.

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: 18412701 = 3 ⋅6137567.

It is a cyclic number.

It is not a de Polignac number, because 10721481 - 2¹ = 10721479 is a prime.

It is a super-2 number, since 2×10721481² = 229900309666722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10721489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1786911 + ... + 1786916.

It is an arithmetic number, because the mean of its divisors is an integer number (3573828).

Almost surely, 2^10721481 is an apocalyptic number.

It is an amenable number.

10721481 is a deficient number, since it is larger than the sum of its proper divisors (3573831).

10721481 is an equidigital number, since it uses as much as digits as its factorization.

10721481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3573830.

The product of its (nonzero) digits is 448, while the sum is 24.

The square root of 10721481 is about 3274.3672671220. The cubic root of 10721481 is about 220.5049078252.

The spelling of 10721481 in words is "ten million, seven hundred twenty-one thousand, four hundred eighty-one".