14993557 has 2 divisors, whose sum is σ = 14993558. Its totient is φ = 14993556.

The previous prime is 14993521. The next prime is 14993579. The reversal of 14993557 is 75539941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13645636 + 1347921 = 3694^2 + 1161^2 .

It is an emirp because it is prime and its reverse (75539941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 14993557 - 2¹⁵ = 14960789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14993597) 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 as a sum of consecutive naturals, namely, 7496778 + 7496779.

It is an arithmetic number, because the mean of its divisors is an integer number (7496779).

Almost surely, 2^14993557 is an apocalyptic number.

It is an amenable number.

14993557 is a deficient number, since it is larger than the sum of its proper divisors (1).

14993557 is an equidigital number, since it uses as much as digits as its factorization.

14993557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 170100, while the sum is 43.

The square root of 14993557 is about 3872.1514691448. The cubic root of 14993557 is about 246.5858916997.

The spelling of 14993557 in words is "fourteen million, nine hundred ninety-three thousand, five hundred fifty-seven".