157403 has 8 divisors (see below), whose sum is σ = 171072. Its totient is φ = 144256.

The previous prime is 157393. The next prime is 157411. The reversal of 157403 is 304751.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 157403 - 2¹⁶ = 91867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157433) 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 in 7 ways as a sum of consecutive naturals, for example, 701 + ... + 897.

It is an arithmetic number, because the mean of its divisors is an integer number (21384).

2¹⁵⁷⁴⁰³ is an apocalyptic number.

157403 is a deficient number, since it is larger than the sum of its proper divisors (13669).

157403 is a wasteful number, since it uses less digits than its factorization.

157403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 157403 is about 396.7404693247. The cubic root of 157403 is about 53.9930260770.

The spelling of 157403 in words is "one hundred fifty-seven thousand, four hundred three".