157215559 has 2 divisors, whose sum is σ = 157215560. Its totient is φ = 157215558.

The previous prime is 157215551. The next prime is 157215631. The reversal of 157215559 is 955512751.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (955512751) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 157215559 - 2³ = 157215551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157215551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78607779 + 78607780.

It is an arithmetic number, because the mean of its divisors is an integer number (78607780).

Almost surely, 2^157215559 is an apocalyptic number.

157215559 is a deficient number, since it is larger than the sum of its proper divisors (1).

157215559 is an equidigital number, since it uses as much as digits as its factorization.

157215559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 78750, while the sum is 40.

The square root of 157215559 is about 12538.5628761832. The cubic root of 157215559 is about 539.7158530235.

The spelling of 157215559 in words is "one hundred fifty-seven million, two hundred fifteen thousand, five hundred fifty-nine".