157791353 has 4 divisors (see below), whose sum is σ = 158238708. Its totient is φ = 157344000.

The previous prime is 157791317. The next prime is 157791367. The reversal of 157791353 is 353197751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 353197751 = 2539 ⋅139109.

It can be written as a sum of positive squares in 2 ways, for example, as 91336249 + 66455104 = 9557^2 + 8152^2 .

It is a cyclic number.

It is not a de Polignac number, because 157791353 - 2²⁰ = 156742777 is a prime.

It is a super-2 number, since 2×157791353² = 49796222163141218, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 157791353.

It is not an unprimeable number, because it can be changed into a prime (157791313) 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, 223148 + ... + 223853.

It is an arithmetic number, because the mean of its divisors is an integer number (39559677).

Almost surely, 2^157791353 is an apocalyptic number.

It is an amenable number.

157791353 is a deficient number, since it is larger than the sum of its proper divisors (447355).

157791353 is an equidigital number, since it uses as much as digits as its factorization.

157791353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447354.

The product of its digits is 99225, while the sum is 41.

The square root of 157791353 is about 12561.5028161443. The cubic root of 157791353 is about 540.3739442343.

It can be divided in two parts, 157 and 791353, that multiplied together give a palindrome (124242421).

The spelling of 157791353 in words is "one hundred fifty-seven million, seven hundred ninety-one thousand, three hundred fifty-three".