157401 has 6 divisors (see below), whose sum is σ = 227370. Its totient is φ = 104928.

The previous prime is 157393. The next prime is 157411. The reversal of 157401 is 104751.

It can be written as a sum of positive squares in only one way, i.e., 81225 + 76176 = 285^2 + 276^2 .

It is not a de Polignac number, because 157401 - 2³ = 157393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (157411) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8736 + ... + 8753.

It is an arithmetic number, because the mean of its divisors is an integer number (37895).

2¹⁵⁷⁴⁰¹ is an apocalyptic number.

It is an amenable number.

157401 is a deficient number, since it is larger than the sum of its proper divisors (69969).

157401 is a wasteful number, since it uses less digits than its factorization.

157401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17495 (or 17492 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 157401 is about 396.7379487773. The cubic root of 157401 is about 53.9927973933.

Subtracting from 157401 its reverse (104751), we obtain a triangular number (52650 = T₃₂₄).

The spelling of 157401 in words is "one hundred fifty-seven thousand, four hundred one".