157922 has 6 divisors (see below), whose sum is σ = 237729. Its totient is φ = 78680.

The previous prime is 157907. The next prime is 157931. The reversal of 157922 is 229751.

It can be written as a sum of positive squares in 2 ways, for example, as 152881 + 5041 = 391^2 + 71^2 .

It is an ABA number since it can be written as A⋅B^{A}, here for A=2, B=281.

It is a Duffinian number.

It is a junction number, because it is equal to *n*+sod(*n*) for *n* = 157891 and 157900.

It is an unprimeable number.

157922 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 2 ways as a sum of consecutive naturals, for example, 422 + ... + 702.

157922 is a Friedman number, since it can be written as (571-9)^2/2, using all its digits and the basic arithmetic operations.

2^{157922} is an apocalyptic number.

157922 is a deficient number, since it is larger than the sum of its proper divisors (79807).

157922 is an frugal number, since it uses more digits than its factorization.

157922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564 (or 283 counting only the distinct ones).

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

The square root of 157922 is about 397.3940110268. The cubic root of 157922 is about 54.0523041461.

The spelling of 157922 in words is "one hundred fifty-seven thousand, nine hundred twenty-two".

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