55417567 has 4 divisors (see below), whose sum is σ = 55496440. Its totient is φ = 55338696.

The previous prime is 55417561. The next prime is 55417577. The reversal of 55417567 is 76571455.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55417567 is a prime.

It is a super-4 number, since 4×55417567⁴ (a number of 32 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55417561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38373 + ... + 39790.

It is an arithmetic number, because the mean of its divisors is an integer number (13874110).

Almost surely, 2^55417567 is an apocalyptic number.

55417567 is a deficient number, since it is larger than the sum of its proper divisors (78873).

55417567 is an equidigital number, since it uses as much as digits as its factorization.

55417567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78872.

The product of its digits is 147000, while the sum is 40.

The square root of 55417567 is about 7444.2976162967. The cubic root of 55417567 is about 381.2552373374.

The spelling of 55417567 in words is "fifty-five million, four hundred seventeen thousand, five hundred sixty-seven".