55221049 has 16 divisors (see below), whose sum is σ = 66286080. Its totient is φ = 45446400.

The previous prime is 55221041. The next prime is 55221059. The reversal of 55221049 is 94012255.

It is a cyclic number.

It is not a de Polignac number, because 55221049 - 2³ = 55221041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55221041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2377 + ... + 10774.

It is an arithmetic number, because the mean of its divisors is an integer number (4142880).

Almost surely, 2^55221049 is an apocalyptic number.

It is an amenable number.

55221049 is a deficient number, since it is larger than the sum of its proper divisors (11065031).

55221049 is a wasteful number, since it uses less digits than its factorization.

55221049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13200.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 55221049 is about 7431.0866634699. The cubic root of 55221049 is about 380.8040431368.

The spelling of 55221049 in words is "fifty-five million, two hundred twenty-one thousand, forty-nine".