157099 has 4 divisors (see below), whose sum is σ = 158464. Its totient is φ = 155736.

The previous prime is 157081. The next prime is 157103. The reversal of 157099 is 990751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 990751 = 241 ⋅4111.

It is a cyclic number.

It is not a de Polignac number, because 157099 - 2⁷ = 156971 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 157099.

It is not an unprimeable number, because it can be changed into a prime (157019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 492 + ... + 745.

It is an arithmetic number, because the mean of its divisors is an integer number (39616).

2¹⁵⁷⁰⁹⁹ is an apocalyptic number.

157099 is a deficient number, since it is larger than the sum of its proper divisors (1365).

157099 is a wasteful number, since it uses less digits than its factorization.

157099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1364.

The product of its (nonzero) digits is 2835, while the sum is 31.

The square root of 157099 is about 396.3571621656. The cubic root of 157099 is about 53.9582438974.

The spelling of 157099 in words is "one hundred fifty-seven thousand, ninety-nine".