55771722 has 12 divisors (see below), whose sum is σ = 120838770. Its totient is φ = 18590568.

The previous prime is 55771693. The next prime is 55771739. The reversal of 55771722 is 22717755.

It can be written as a sum of positive squares in only one way, i.e., 50253921 + 5517801 = 7089^2 + 2349^2 .

It is a super-2 number, since 2×55771722² = 6220969949690568, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1549197 + ... + 1549232.

Almost surely, 2^55771722 is an apocalyptic number.

55771722 is an abundant number, since it is smaller than the sum of its proper divisors (65067048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55771722 is a wasteful number, since it uses less digits than its factorization.

55771722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3098437 (or 3098434 counting only the distinct ones).

The product of its digits is 34300, while the sum is 36.

The square root of 55771722 is about 7468.0467325801. The cubic root of 55771722 is about 382.0656713023.

The spelling of 55771722 in words is "fifty-five million, seven hundred seventy-one thousand, seven hundred twenty-two".