55217416 has 16 divisors (see below), whose sum is σ = 103836240. Its totient is φ = 27527760.

The previous prime is 55217389. The next prime is 55217443. The reversal of 55217416 is 61471255.

It is an interprime number because it is at equal distance from previous prime (55217389) and next prime (55217443).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7170 + ... + 12721.

It is an arithmetic number, because the mean of its divisors is an integer number (6489765).

Almost surely, 2^55217416 is an apocalyptic number.

It is an amenable number.

55217416 is a deficient number, since it is larger than the sum of its proper divisors (48618824).

55217416 is a wasteful number, since it uses less digits than its factorization.

55217416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20244 (or 20240 counting only the distinct ones).

The product of its digits is 8400, while the sum is 31.

The square root of 55217416 is about 7430.8422133699. The cubic root of 55217416 is about 380.7956919045.

The spelling of 55217416 in words is "fifty-five million, two hundred seventeen thousand, four hundred sixteen".