157271723 has 24 divisors (see below), whose sum is σ = 194578848. Its totient is φ = 126462336.

The previous prime is 157271717. The next prime is 157271731. The reversal of 157271723 is 327172751.

It is not a de Polignac number, because 157271723 - 2⁶ = 157271659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157271783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58415 + ... + 61047.

It is an arithmetic number, because the mean of its divisors is an integer number (8107452).

Almost surely, 2^157271723 is an apocalyptic number.

157271723 is a deficient number, since it is larger than the sum of its proper divisors (37307125).

157271723 is a wasteful number, since it uses less digits than its factorization.

157271723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2723 (or 2716 counting only the distinct ones).

The product of its digits is 20580, while the sum is 35.

The square root of 157271723 is about 12540.8023268051. The cubic root of 157271723 is about 539.7801150945.

The spelling of 157271723 in words is "one hundred fifty-seven million, two hundred seventy-one thousand, seven hundred twenty-three".