157553 has 4 divisors (see below), whose sum is σ = 171888. Its totient is φ = 143220.

The previous prime is 157543. The next prime is 157559. The reversal of 157553 is 355751.

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: 355751 = 11 ⋅32341.

It is not a de Polignac number, because 157553 - 2⁶ = 157489 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (157559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7151 + ... + 7172.

It is an arithmetic number, because the mean of its divisors is an integer number (42972).

2¹⁵⁷⁵⁵³ is an apocalyptic number.

It is an amenable number.

157553 is a deficient number, since it is larger than the sum of its proper divisors (14335).

157553 is a wasteful number, since it uses less digits than its factorization.

157553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14334.

The product of its digits is 2625, while the sum is 26.

The square root of 157553 is about 396.9294647667. The cubic root of 157553 is about 54.0101718378.

The spelling of 157553 in words is "one hundred fifty-seven thousand, five hundred fifty-three".