157342511 has 4 divisors (see below), whose sum is σ = 160690272. Its totient is φ = 153994752.

The previous prime is 157342499. The next prime is 157342513. The reversal of 157342511 is 115243751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 115243751 = 7 ⋅16463393.

It is a cyclic number.

It is not a de Polignac number, because 157342511 - 2¹⁰ = 157341487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157342513) 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, 1673810 + ... + 1673903.

It is an arithmetic number, because the mean of its divisors is an integer number (40172568).

Almost surely, 2^157342511 is an apocalyptic number.

157342511 is a deficient number, since it is larger than the sum of its proper divisors (3347761).

157342511 is an equidigital number, since it uses as much as digits as its factorization.

157342511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3347760.

The product of its digits is 4200, while the sum is 29.

The square root of 157342511 is about 12543.6243167595. The cubic root of 157342511 is about 539.8610879541.

The spelling of 157342511 in words is "one hundred fifty-seven million, three hundred forty-two thousand, five hundred eleven".