157310273 has 4 divisors (see below), whose sum is σ = 161561940. Its totient is φ = 153058608.

The previous prime is 157310267. The next prime is 157310281. The reversal of 157310273 is 372013751.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 60031504 + 97278769 = 7748^2 + 9863^2 .

It is a cyclic number.

It is not a de Polignac number, because 157310273 - 2²⁰ = 156261697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157316273) 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 3 ways as a sum of consecutive naturals, for example, 2125778 + ... + 2125851.

It is an arithmetic number, because the mean of its divisors is an integer number (40390485).

Almost surely, 2^157310273 is an apocalyptic number.

It is an amenable number.

157310273 is a deficient number, since it is larger than the sum of its proper divisors (4251667).

157310273 is an equidigital number, since it uses as much as digits as its factorization.

157310273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4251666.

The product of its (nonzero) digits is 4410, while the sum is 29.

The square root of 157310273 is about 12542.3392156328. The cubic root of 157310273 is about 539.8242146166.

The spelling of 157310273 in words is "one hundred fifty-seven million, three hundred ten thousand, two hundred seventy-three".