55221464 has 32 divisors (see below), whose sum is σ = 106991280. Its totient is φ = 26699904.

The previous prime is 55221461. The next prime is 55221469. The reversal of 55221464 is 46412255.

55221464 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55221461) 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, 57839 + ... + 58785.

Almost surely, 2^55221464 is an apocalyptic number.

It is an amenable number.

55221464 is a deficient number, since it is larger than the sum of its proper divisors (51769816).

55221464 is a wasteful number, since it uses less digits than its factorization.

55221464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1187 (or 1183 counting only the distinct ones).

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

The square root of 55221464 is about 7431.1145866552. The cubic root of 55221464 is about 380.8049970803.

The spelling of 55221464 in words is "fifty-five million, two hundred twenty-one thousand, four hundred sixty-four".