14757721 has 4 divisors (see below), whose sum is σ = 16099344. Its totient is φ = 13416100.

The previous prime is 14757707. The next prime is 14757727. The reversal of 14757721 is 12775741.

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 a cyclic number.

It is not a de Polignac number, because 14757721 - 2⁵ = 14757689 is a prime.

It is a super-2 number, since 2×14757721² = 435580658227682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14757727) 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, 670795 + ... + 670816.

It is an arithmetic number, because the mean of its divisors is an integer number (4024836).

Almost surely, 2^14757721 is an apocalyptic number.

14757721 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

14757721 is a deficient number, since it is larger than the sum of its proper divisors (1341623).

14757721 is a wasteful number, since it uses less digits than its factorization.

14757721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1341622.

The product of its digits is 13720, while the sum is 34.

The square root of 14757721 is about 3841.5779310070. The cubic root of 14757721 is about 245.2861906224.

The spelling of 14757721 in words is "fourteen million, seven hundred fifty-seven thousand, seven hundred twenty-one".