157057843 has 4 divisors (see below), whose sum is σ = 157088008. Its totient is φ = 157027680.

The previous prime is 157057807. The next prime is 157057853. The reversal of 157057843 is 348750751.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157057843 is a prime.

It is a super-4 number, since 4×157057843⁴ (a number of 34 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 157057796 and 157057805.

It is not an unprimeable number, because it can be changed into a prime (157057853) 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 in 3 ways as a sum of consecutive naturals, for example, 5046 + ... + 18427.

It is an arithmetic number, because the mean of its divisors is an integer number (39272002).

Almost surely, 2^157057843 is an apocalyptic number.

157057843 is a deficient number, since it is larger than the sum of its proper divisors (30165).

157057843 is an equidigital number, since it uses as much as digits as its factorization.

157057843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30164.

The product of its (nonzero) digits is 117600, while the sum is 40.

The square root of 157057843 is about 12532.2720605643. The cubic root of 157057843 is about 539.5353146888.

The spelling of 157057843 in words is "one hundred fifty-seven million, fifty-seven thousand, eight hundred forty-three".