55772 has 12 divisors (see below), whose sum is σ = 99456.
Its totient is φ = 27360.
The previous prime is 55763. The next prime is 55787. The reversal of 55772 is 27755.
55772 is nontrivially palindromic in base 3 and base 9.
It is a super-2 number, since 2×557722 = 6221031968, which contains 22 as substring.
It is a zygodrome in base 3.
It is a congruent number.
It is an unprimeable number.
55772 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 3 ways as a sum of consecutive naturals, for example, 197 + ... + 387.
It is an arithmetic number, because the mean of its divisors is an integer number (8288).
255772 is an apocalyptic number.
It is an amenable number.
55772 is a deficient number, since it is larger than the sum of its proper divisors (43684).
55772 is a wasteful number, since it uses less digits than its factorization.
55772 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 268 (or 266 counting only the distinct ones).
The product of its digits is 2450, while the sum is 26.
The square root of 55772 is about 236.1609620577.
The cubic root of 55772 is about 38.2066306117.
It can be divided in two parts, 557 and 72, that multiplied together give a palindrome (40104).
The spelling of 55772 in words is "fifty-five thousand, seven hundred seventy-two".