157983 has 8 divisors (see below), whose sum is σ = 240768. Its totient is φ = 90264.

The previous prime is 157951. The next prime is 157991. The reversal of 157983 is 389751.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 157983 - 2⁵ = 157951 is a prime.

157983 is a lucky number.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3741 + ... + 3782.

It is an arithmetic number, because the mean of its divisors is an integer number (30096).

2¹⁵⁷⁹⁸³ is an apocalyptic number.

157983 is a deficient number, since it is larger than the sum of its proper divisors (82785).

157983 is an equidigital number, since it uses as much as digits as its factorization.

157983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7533.

The product of its digits is 7560, while the sum is 33.

The square root of 157983 is about 397.4707536411. The cubic root of 157983 is about 54.0592627841.

The spelling of 157983 in words is "one hundred fifty-seven thousand, nine hundred eighty-three".