157863247 has 2 divisors, whose sum is σ = 157863248. Its totient is φ = 157863246.

The previous prime is 157863239. The next prime is 157863257. The reversal of 157863247 is 742368751.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 157863247 - 2³ = 157863239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157863227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78931623 + 78931624.

It is an arithmetic number, because the mean of its divisors is an integer number (78931624).

Almost surely, 2^157863247 is an apocalyptic number.

157863247 is a deficient number, since it is larger than the sum of its proper divisors (1).

157863247 is an equidigital number, since it uses as much as digits as its factorization.

157863247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 282240, while the sum is 43.

The square root of 157863247 is about 12564.3641701441. The cubic root of 157863247 is about 540.4560014252.

The spelling of 157863247 in words is "one hundred fifty-seven million, eight hundred sixty-three thousand, two hundred forty-seven".