157196881 has 4 divisors (see below), whose sum is σ = 164031552. Its totient is φ = 150362212.

The previous prime is 157196869. The next prime is 157196891. The reversal of 157196881 is 188691751.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 188691751 = 1039 ⋅181609.

It is a cyclic number.

It is not a de Polignac number, because 157196881 - 2²¹ = 155099729 is a prime.

It is a super-2 number, since 2×157196881² = 49421718792256322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157196891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3417301 + ... + 3417346.

It is an arithmetic number, because the mean of its divisors is an integer number (41007888).

Almost surely, 2^157196881 is an apocalyptic number.

It is an amenable number.

157196881 is a deficient number, since it is larger than the sum of its proper divisors (6834671).

157196881 is an equidigital number, since it uses as much as digits as its factorization.

157196881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6834670.

The product of its digits is 120960, while the sum is 46.

The square root of 157196881 is about 12537.8180318587. The cubic root of 157196881 is about 539.6944785234.

The spelling of 157196881 in words is "one hundred fifty-seven million, one hundred ninety-six thousand, eight hundred eighty-one".