55782417 has 8 divisors (see below), whose sum is σ = 75072096. Its totient is φ = 36840512.

The previous prime is 55782409. The next prime is 55782449. The reversal of 55782417 is 71428755.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55782417 - 2³ = 55782409 is a prime.

It is a super-2 number, since 2×55782417² = 6223356092723778, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55742417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86568 + ... + 87209.

It is an arithmetic number, because the mean of its divisors is an integer number (9384012).

Almost surely, 2^55782417 is an apocalyptic number.

It is an amenable number.

55782417 is a deficient number, since it is larger than the sum of its proper divisors (19289679).

55782417 is a wasteful number, since it uses less digits than its factorization.

55782417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173887.

The product of its digits is 78400, while the sum is 39.

The square root of 55782417 is about 7468.7627489431. The cubic root of 55782417 is about 382.0900918691.

The spelling of 55782417 in words is "fifty-five million, seven hundred eighty-two thousand, four hundred seventeen".