157974 has 16 divisors (see below), whose sum is σ = 320112. Its totient is φ = 51968.

The previous prime is 157951. The next prime is 157991. The reversal of 157974 is 479751.

It is a Curzon number.

It is a nialpdrome in base 11.

It is a congruent number.

It is an unprimeable number.

157974 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 562 + ... + 794.

It is an arithmetic number, because the mean of its divisors is an integer number (20007).

2¹⁵⁷⁹⁷⁴ is an apocalyptic number.

157974 is an abundant number, since it is smaller than the sum of its proper divisors (162138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

157974 is a wasteful number, since it uses less digits than its factorization.

157974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351.

The product of its digits is 8820, while the sum is 33.

The square root of 157974 is about 397.4594318921. The cubic root of 157974 is about 54.0582362125.

It can be divided in two parts, 1579 and 74, that added together give a triangular number (1653 = T₅₇).

The spelling of 157974 in words is "one hundred fifty-seven thousand, nine hundred seventy-four".