55776223 has 4 divisors (see below), whose sum is σ = 57575488. Its totient is φ = 53976960.

The previous prime is 55776199. The next prime is 55776247. The reversal of 55776223 is 32267755.

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

It is an interprime number because it is at equal distance from previous prime (55776199) and next prime (55776247).

It is a cyclic number.

It is not a de Polignac number, because 55776223 - 2²¹ = 53679071 is a prime.

It is a super-2 number, since 2×55776223² = 6221974104291458, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55776283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 899586 + ... + 899647.

It is an arithmetic number, because the mean of its divisors is an integer number (14393872).

Almost surely, 2^55776223 is an apocalyptic number.

55776223 is a deficient number, since it is larger than the sum of its proper divisors (1799265).

55776223 is a wasteful number, since it uses less digits than its factorization.

55776223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1799264.

The product of its digits is 88200, while the sum is 37.

The square root of 55776223 is about 7468.3480770516. The cubic root of 55776223 is about 382.0759490994.

The spelling of 55776223 in words is "fifty-five million, seven hundred seventy-six thousand, two hundred twenty-three".