55464221 has 8 divisors (see below), whose sum is σ = 57403104. Its totient is φ = 53548560.

The previous prime is 55464209. The next prime is 55464229. The reversal of 55464221 is 12246455.

55464221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 55464221 - 2¹⁴ = 55447837 is a prime.

It is a super-2 number, since 2×55464221² = 6152559622273682, 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 (55464229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 875 + ... + 10568.

It is an arithmetic number, because the mean of its divisors is an integer number (7175388).

Almost surely, 2^55464221 is an apocalyptic number.

It is an amenable number.

55464221 is a deficient number, since it is larger than the sum of its proper divisors (1938883).

55464221 is a wasteful number, since it uses less digits than its factorization.

55464221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11611.

The product of its digits is 9600, while the sum is 29.

The square root of 55464221 is about 7447.4304964867. The cubic root of 55464221 is about 381.3621955560.

The spelling of 55464221 in words is "fifty-five million, four hundred sixty-four thousand, two hundred twenty-one".