55459217 has 16 divisors (see below), whose sum is σ = 63098880. Its totient is φ = 48286800.

The previous prime is 55459213. The next prime is 55459231. The reversal of 55459217 is 71295455.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 55459217 - 2² = 55459213 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55459213) 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, 34334 + ... + 35912.

It is an arithmetic number, because the mean of its divisors is an integer number (3943680).

Almost surely, 2^55459217 is an apocalyptic number.

It is an amenable number.

55459217 is a deficient number, since it is larger than the sum of its proper divisors (7639663).

55459217 is a wasteful number, since it uses less digits than its factorization.

55459217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1724.

The product of its digits is 63000, while the sum is 38.

The square root of 55459217 is about 7447.0945341119. The cubic root of 55459217 is about 381.3507263375.

The spelling of 55459217 in words is "fifty-five million, four hundred fifty-nine thousand, two hundred seventeen".