157840211 has 2 divisors, whose sum is σ = 157840212. Its totient is φ = 157840210.

The previous prime is 157840181. The next prime is 157840213. The reversal of 157840211 is 112048751.

157840211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 157840211 - 2²² = 153645907 is a prime.

It is a Sophie Germain prime.

Together with 157840213, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_8860160 and since 157840211 and 8860160 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (157840213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78920105 + 78920106.

It is an arithmetic number, because the mean of its divisors is an integer number (78920106).

Almost surely, 2^157840211 is an apocalyptic number.

157840211 is a deficient number, since it is larger than the sum of its proper divisors (1).

157840211 is an equidigital number, since it uses as much as digits as its factorization.

157840211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2240, while the sum is 29.

The square root of 157840211 is about 12563.4474170110. The cubic root of 157840211 is about 540.4297116875.

Adding to 157840211 its reverse (112048751), we get a palindrome (269888962).

The spelling of 157840211 in words is "one hundred fifty-seven million, eight hundred forty thousand, two hundred eleven".