55776211 has 8 divisors (see below), whose sum is σ = 56939760. Its totient is φ = 54624768.

The previous prime is 55776199. The next prime is 55776247. The reversal of 55776211 is 11267755.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55776211 - 2⁵ = 55776179 is a prime.

It is a super-2 number, since 2×55776211² = 6221971427033042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55776271) 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, 6595 + ... + 12451.

It is an arithmetic number, because the mean of its divisors is an integer number (7117470).

Almost surely, 2^55776211 is an apocalyptic number.

55776211 is a deficient number, since it is larger than the sum of its proper divisors (1163549).

55776211 is a wasteful number, since it uses less digits than its factorization.

55776211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6053.

The product of its digits is 14700, while the sum is 34.

The square root of 55776211 is about 7468.3472736610. The cubic root of 55776211 is about 382.0759216987.

The spelling of 55776211 in words is "fifty-five million, seven hundred seventy-six thousand, two hundred eleven".