157247983 has 4 divisors (see below), whose sum is σ = 157274208. Its totient is φ = 157221760.

The previous prime is 157247953. The next prime is 157248001. The reversal of 157247983 is 389742751.

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

It is a cyclic number.

It is not a de Polignac number, because 157247983 - 2⁹ = 157247471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157247953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 810 + ... + 17752.

It is an arithmetic number, because the mean of its divisors is an integer number (39318552).

Almost surely, 2^157247983 is an apocalyptic number.

157247983 is a deficient number, since it is larger than the sum of its proper divisors (26225).

157247983 is an equidigital number, since it uses as much as digits as its factorization.

157247983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26224.

The product of its digits is 423360, while the sum is 46.

The square root of 157247983 is about 12539.8557806699. The cubic root of 157247983 is about 539.7529539822.

The spelling of 157247983 in words is "one hundred fifty-seven million, two hundred forty-seven thousand, nine hundred eighty-three".