157191141 has 4 divisors (see below), whose sum is σ = 209588192. Its totient is φ = 104794092.

The previous prime is 157191137. The next prime is 157191157. The reversal of 157191141 is 141191751.

It is a happy number.

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.

It is not a de Polignac number, because 157191141 - 2² = 157191137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 157191099 and 157191108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157191191) 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, 26198521 + ... + 26198526.

It is an arithmetic number, because the mean of its divisors is an integer number (52397048).

Almost surely, 2^157191141 is an apocalyptic number.

It is an amenable number.

157191141 is a deficient number, since it is larger than the sum of its proper divisors (52397051).

157191141 is an equidigital number, since it uses as much as digits as its factorization.

157191141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52397050.

The product of its digits is 1260, while the sum is 30.

The square root of 157191141 is about 12537.5891223153. The cubic root of 157191141 is about 539.6879095126.

The spelling of 157191141 in words is "one hundred fifty-seven million, one hundred ninety-one thousand, one hundred forty-one".