55766517 has 8 divisors (see below), whose sum is σ = 75013824. Its totient is φ = 36848448.

The previous prime is 55766509. The next prime is 55766527. The reversal of 55766517 is 71566755.

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

It is not a de Polignac number, because 55766517 - 2³ = 55766509 is a prime.

It is a super-2 number, since 2×55766517² = 6219808836622578, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55766527) 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 7 ways as a sum of consecutive naturals, for example, 81913 + ... + 82590.

It is an arithmetic number, because the mean of its divisors is an integer number (9376728).

Almost surely, 2^55766517 is an apocalyptic number.

It is an amenable number.

55766517 is a deficient number, since it is larger than the sum of its proper divisors (19247307).

55766517 is a wasteful number, since it uses less digits than its factorization.

55766517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164619.

The product of its digits is 220500, while the sum is 42.

The square root of 55766517 is about 7467.6982397523. The cubic root of 55766517 is about 382.0537852687.

The spelling of 55766517 in words is "fifty-five million, seven hundred sixty-six thousand, five hundred seventeen".