157812647 has 2 divisors, whose sum is σ = 157812648. Its totient is φ = 157812646.

The previous prime is 157812643. The next prime is 157812703. The reversal of 157812647 is 746218751.

It is a weak prime.

It is an emirp because it is prime and its reverse (746218751) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 157812647 - 2² = 157812643 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157812643) 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 as a sum of consecutive naturals, namely, 78906323 + 78906324.

It is an arithmetic number, because the mean of its divisors is an integer number (78906324).

Almost surely, 2^157812647 is an apocalyptic number.

157812647 is a deficient number, since it is larger than the sum of its proper divisors (1).

157812647 is an equidigital number, since it uses as much as digits as its factorization.

157812647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 94080, while the sum is 41.

The square root of 157812647 is about 12562.3503772184. The cubic root of 157812647 is about 540.3982510271.

The spelling of 157812647 in words is "one hundred fifty-seven million, eight hundred twelve thousand, six hundred forty-seven".