55768559 has 8 divisors (see below), whose sum is σ = 69529728. Its totient is φ = 43455960.

The previous prime is 55768547. The next prime is 55768567. The reversal of 55768559 is 95586755.

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 55768559 - 2⁴ = 55768543 is a prime.

It is a super-2 number, since 2×55768559² = 6220264345872962, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55768519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 362057 + ... + 362210.

It is an arithmetic number, because the mean of its divisors is an integer number (8691216).

Almost surely, 2^55768559 is an apocalyptic number.

55768559 is a deficient number, since it is larger than the sum of its proper divisors (13761169).

55768559 is a wasteful number, since it uses less digits than its factorization.

55768559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724285.

The product of its digits is 1890000, while the sum is 50.

The square root of 55768559 is about 7467.8349606830. The cubic root of 55768559 is about 382.0584484271.

The spelling of 55768559 in words is "fifty-five million, seven hundred sixty-eight thousand, five hundred fifty-nine".