157275913 has 4 divisors (see below), whose sum is σ = 157328020. Its totient is φ = 157223808.

The previous prime is 157275883. The next prime is 157275919. The reversal of 157275913 is 319572751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 319572751 = 491 ⋅650861.

It can be written as a sum of positive squares in 2 ways, for example, as 120406729 + 36869184 = 10973^2 + 6072^2 .

It is a cyclic number.

It is not a de Polignac number, because 157275913 - 2²¹ = 155178761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157275919) 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, 21228 + ... + 27661.

It is an arithmetic number, because the mean of its divisors is an integer number (39332005).

Almost surely, 2^157275913 is an apocalyptic number.

It is an amenable number.

157275913 is a deficient number, since it is larger than the sum of its proper divisors (52107).

157275913 is an equidigital number, since it uses as much as digits as its factorization.

157275913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52106.

The product of its digits is 66150, while the sum is 40.

The square root of 157275913 is about 12540.9693803948. The cubic root of 157275913 is about 539.7849086212.

The spelling of 157275913 in words is "one hundred fifty-seven million, two hundred seventy-five thousand, nine hundred thirteen".