4220055551 has 4 divisors (see below), whose sum is σ = 4220192592. Its totient is φ = 4219918512.

The previous prime is 4220055547. The next prime is 4220055601. The reversal of 4220055551 is 1555500224.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 4220055551 - 2² = 4220055547 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4220045551) 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, 1571 + ... + 91883.

It is an arithmetic number, because the mean of its divisors is an integer number (1055048148).

Almost surely, 2^4220055551 is an apocalyptic number.

4220055551 is a deficient number, since it is larger than the sum of its proper divisors (137041).

4220055551 is an equidigital number, since it uses as much as digits as its factorization.

4220055551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137040.

The product of its (nonzero) digits is 10000, while the sum is 29.

The square root of 4220055551 is about 64961.9546426984. The cubic root of 4220055551 is about 1615.9926802954.

Adding to 4220055551 its reverse (1555500224), we get a palindrome (5775555775).

The spelling of 4220055551 in words is "four billion, two hundred twenty million, fifty-five thousand, five hundred fifty-one".