157087843 has 4 divisors (see below), whose sum is σ = 171368568. Its totient is φ = 142807120.

The previous prime is 157087811. The next prime is 157087849. The reversal of 157087843 is 348780751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 348780751 = 11 ⋅31707341.

It is a cyclic number.

It is not a de Polignac number, because 157087843 - 2⁵ = 157087811 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 157087843.

It is not an unprimeable number, because it can be changed into a prime (157087849) 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, 7140346 + ... + 7140367.

It is an arithmetic number, because the mean of its divisors is an integer number (42842142).

Almost surely, 2^157087843 is an apocalyptic number.

157087843 is a deficient number, since it is larger than the sum of its proper divisors (14280725).

157087843 is a wasteful number, since it uses less digits than its factorization.

157087843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14280724.

The product of its (nonzero) digits is 188160, while the sum is 43.

The square root of 157087843 is about 12533.4689132738. The cubic root of 157087843 is about 539.5696651520.

The spelling of 157087843 in words is "one hundred fifty-seven million, eighty-seven thousand, eight hundred forty-three".