55247017 has 16 divisors (see below), whose sum is σ = 64800000. Its totient is φ = 46126080.

The previous prime is 55247011. The next prime is 55247021. The reversal of 55247017 is 71074255.

It is not a de Polignac number, because 55247017 - 2³ = 55247009 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55247017.

It is not an unprimeable number, because it can be changed into a prime (55247011) 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, 43609 + ... + 44857.

It is an arithmetic number, because the mean of its divisors is an integer number (4050000).

Almost surely, 2^55247017 is an apocalyptic number.

It is an amenable number.

55247017 is a deficient number, since it is larger than the sum of its proper divisors (9552983).

55247017 is a wasteful number, since it uses less digits than its factorization.

55247017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1416.

The product of its (nonzero) digits is 9800, while the sum is 31.

The square root of 55247017 is about 7432.8337126563. The cubic root of 55247017 is about 380.8637255098.

The spelling of 55247017 in words is "fifty-five million, two hundred forty-seven thousand, seventeen".