157213 has 8 divisors (see below), whose sum is σ = 184832. Its totient is φ = 130896.

The previous prime is 157211. The next prime is 157217. The reversal of 157213 is 312751.

157213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 157213 - 2¹ = 157211 is a prime.

It is the 397-th Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157211) by changing a digit.

It is a nontrivial repunit in base 396.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45 + ... + 562.

It is an arithmetic number, because the mean of its divisors is an integer number (23104).

2¹⁵⁷²¹³ is an apocalyptic number.

It is an amenable number.

157213 is a deficient number, since it is larger than the sum of its proper divisors (27619).

157213 is an equidigital number, since it uses as much as digits as its factorization.

157213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651.

The product of its digits is 210, while the sum is 19.

The square root of 157213 is about 396.5009457744. The cubic root of 157213 is about 53.9712924687.

Adding to 157213 its reverse (312751), we get a palindrome (469964).

The spelling of 157213 in words is "one hundred fifty-seven thousand, two hundred thirteen".