14720557 has 2 divisors, whose sum is σ = 14720558. Its totient is φ = 14720556.

The previous prime is 14720551. The next prime is 14720569. The reversal of 14720557 is 75502741.

14720557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14243076 + 477481 = 3774^2 + 691^2 .

It is a cyclic number.

It is not a de Polignac number, because 14720557 - 2¹⁵ = 14687789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14720551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7360278 + 7360279.

It is an arithmetic number, because the mean of its divisors is an integer number (7360279).

Almost surely, 2^14720557 is an apocalyptic number.

It is an amenable number.

14720557 is a deficient number, since it is larger than the sum of its proper divisors (1).

14720557 is an equidigital number, since it uses as much as digits as its factorization.

14720557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9800, while the sum is 31.

The square root of 14720557 is about 3836.7378070439. The cubic root of 14720557 is about 245.0801181817.

The spelling of 14720557 in words is "fourteen million, seven hundred twenty thousand, five hundred fifty-seven".