157235911 has 4 divisors (see below), whose sum is σ = 179698192. Its totient is φ = 134773632.

The previous prime is 157235909. The next prime is 157235921. The reversal of 157235911 is 119532751.

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

It is not a de Polignac number, because 157235911 - 2¹ = 157235909 is a prime.

It is a super-4 number, since 4×157235911⁴ (a number of 34 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157235921) 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 3 ways as a sum of consecutive naturals, for example, 11231130 + ... + 11231143.

It is an arithmetic number, because the mean of its divisors is an integer number (44924548).

Almost surely, 2^157235911 is an apocalyptic number.

157235911 is a deficient number, since it is larger than the sum of its proper divisors (22462281).

157235911 is an equidigital number, since it uses as much as digits as its factorization.

157235911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22462280.

The product of its digits is 9450, while the sum is 34.

The square root of 157235911 is about 12539.3744261825. The cubic root of 157235911 is about 539.7391412679.

The spelling of 157235911 in words is "one hundred fifty-seven million, two hundred thirty-five thousand, nine hundred eleven".