157724103 has 4 divisors (see below), whose sum is σ = 210298808. Its totient is φ = 105149400.

The previous prime is 157724093. The next prime is 157724141. The reversal of 157724103 is 301427751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 301427751 = 3 ⋅100475917.

It is not a de Polignac number, because 157724103 - 2⁵ = 157724071 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 (157724183) 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, 26287348 + ... + 26287353.

It is an arithmetic number, because the mean of its divisors is an integer number (52574702).

Almost surely, 2^157724103 is an apocalyptic number.

157724103 is a deficient number, since it is larger than the sum of its proper divisors (52574705).

157724103 is an equidigital number, since it uses as much as digits as its factorization.

157724103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52574704.

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 157724103 is about 12558.8257014738. The cubic root of 157724103 is about 540.2971649707.

The spelling of 157724103 in words is "one hundred fifty-seven million, seven hundred twenty-four thousand, one hundred three".