157770199 has 2 divisors, whose sum is σ = 157770200. Its totient is φ = 157770198.

The previous prime is 157770169. The next prime is 157770203. The reversal of 157770199 is 991077751.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 157770199 - 2¹¹ = 157768151 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157770169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78885099 + 78885100.

It is an arithmetic number, because the mean of its divisors is an integer number (78885100).

Almost surely, 2^157770199 is an apocalyptic number.

157770199 is a deficient number, since it is larger than the sum of its proper divisors (1).

157770199 is an equidigital number, since it uses as much as digits as its factorization.

157770199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138915, while the sum is 46.

The square root of 157770199 is about 12560.6607708353. The cubic root of 157770199 is about 540.3497950840.

The spelling of 157770199 in words is "one hundred fifty-seven million, seven hundred seventy thousand, one hundred ninety-nine".