15557157 has 48 divisors (see below), whose sum is σ = 29275200. Its totient is φ = 8074080.

The previous prime is 15557117. The next prime is 15557161. The reversal of 15557157 is 75175551.

15557157 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 15557157 - 2¹¹ = 15555109 is a prime.

15557157 is strictly pandigital in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15557117) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14019 + ... + 15087.

It is an arithmetic number, because the mean of its divisors is an integer number (609900).

Almost surely, 2^15557157 is an apocalyptic number.

It is an amenable number.

15557157 is a deficient number, since it is larger than the sum of its proper divisors (13718043).

15557157 is a wasteful number, since it uses less digits than its factorization.

15557157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103 (or 1090 counting only the distinct ones).

The product of its digits is 30625, while the sum is 36.

The square root of 15557157 is about 3944.2562036460. The cubic root of 15557157 is about 249.6376457179.

The spelling of 15557157 in words is "fifteen million, five hundred fifty-seven thousand, one hundred fifty-seven".