157527557 has 4 divisors (see below), whose sum is σ = 171848256. Its totient is φ = 143206860.

The previous prime is 157527553. The next prime is 157527571. The reversal of 157527557 is 755725751.

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: 755725751 = 11 ⋅68702341.

It is a cyclic number.

It is not a de Polignac number, because 157527557 - 2² = 157527553 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157527551) 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, 7160333 + ... + 7160354.

It is an arithmetic number, because the mean of its divisors is an integer number (42962064).

Almost surely, 2^157527557 is an apocalyptic number.

It is an amenable number.

157527557 is a deficient number, since it is larger than the sum of its proper divisors (14320699).

157527557 is a wasteful number, since it uses less digits than its factorization.

157527557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14320698.

The product of its digits is 428750, while the sum is 44.

The square root of 157527557 is about 12550.9982471515. The cubic root of 157527557 is about 540.0726434051.

Adding to 157527557 its sum of digits (44), we get a square (157527601 = 12551²).

The spelling of 157527557 in words is "one hundred fifty-seven million, five hundred twenty-seven thousand, five hundred fifty-seven".