157285799 has 32 divisors (see below), whose sum is σ = 187246080. Its totient is φ = 130662400.

The previous prime is 157285789. The next prime is 157285813. The reversal of 157285799 is 997582751.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-157285799 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 157285799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157285729) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 611879 + ... + 612135.

It is an arithmetic number, because the mean of its divisors is an integer number (5851440).

Almost surely, 2^157285799 is an apocalyptic number.

157285799 is a deficient number, since it is larger than the sum of its proper divisors (29960281).

157285799 is a wasteful number, since it uses less digits than its factorization.

157285799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391.

The product of its digits is 1587600, while the sum is 53.

The square root of 157285799 is about 12541.3635223607. The cubic root of 157285799 is about 539.7962182610.

The spelling of 157285799 in words is "one hundred fifty-seven million, two hundred eighty-five thousand, seven hundred ninety-nine".