4155722 has 4 divisors (see below), whose sum is σ = 6233586. Its totient is φ = 2077860.

The previous prime is 4155721. The next prime is 4155731. The reversal of 4155722 is 2275514.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3924361 + 231361 = 1981^2 + 481^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4155691 and 4155700.

It is not an unprimeable number, because it can be changed into a prime (4155721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1038929 + ... + 1038932.

Almost surely, 2^4155722 is an apocalyptic number.

4155722 is a deficient number, since it is larger than the sum of its proper divisors (2077864).

4155722 is a wasteful number, since it uses less digits than its factorization.

4155722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2077863.

The product of its digits is 2800, while the sum is 26.

The square root of 4155722 is about 2038.5588046461. The cubic root of 4155722 is about 160.7738810988.

The spelling of 4155722 in words is "four million, one hundred fifty-five thousand, seven hundred twenty-two".