157490 has 8 divisors (see below), whose sum is σ = 283500. Its totient is φ = 62992.

The previous prime is 157489. The next prime is 157513. The reversal of 157490 is 94751.

157490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 134689 + 22801 = 367^2 + 151^2 .

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

It is a zygodrome in base 3.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7865 + ... + 7884.

2¹⁵⁷⁴⁹⁰ is an apocalyptic number.

157490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

157490 is a deficient number, since it is larger than the sum of its proper divisors (126010).

157490 is a wasteful number, since it uses less digits than its factorization.

157490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15756.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 157490 is about 396.8500976439. The cubic root of 157490 is about 54.0029719443.

Subtracting from 157490 its sum of digits (26), we obtain a cube (157464 = 54³).

The spelling of 157490 in words is "one hundred fifty-seven thousand, four hundred ninety".