155722 has 16 divisors (see below), whose sum is σ = 273600. Its totient is φ = 66444.

The previous prime is 155719. The next prime is 155723. The reversal of 155722 is 227551.

It is a junction number, because it is equal to n+sod(n) for n = 155693 and 155702.

It is not an unprimeable number, because it can be changed into a prime (155723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 573 + ... + 799.

It is an arithmetic number, because the mean of its divisors is an integer number (17100).

2¹⁵⁵⁷²² is an apocalyptic number.

155722 is a deficient number, since it is larger than the sum of its proper divisors (117878).

155722 is an equidigital number, since it uses as much as digits as its factorization.

155722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250 (or 236 counting only the distinct ones).

The product of its digits is 700, while the sum is 22.

The square root of 155722 is about 394.6162693048. The cubic root of 155722 is about 53.8001299039.

The spelling of 155722 in words is "one hundred fifty-five thousand, seven hundred twenty-two".