55667559 has 8 divisors (see below), whose sum is σ = 76782960. Its totient is φ = 35831936.

The previous prime is 55667531. The next prime is 55667561. The reversal of 55667559 is 95576655.

It is a happy number.

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

It is not a de Polignac number, because 55667559 - 2⁵ = 55667527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55667159) 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, 319842 + ... + 320015.

It is an arithmetic number, because the mean of its divisors is an integer number (9597870).

Almost surely, 2^55667559 is an apocalyptic number.

55667559 is a deficient number, since it is larger than the sum of its proper divisors (21115401).

55667559 is a wasteful number, since it uses less digits than its factorization.

55667559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639889.

The product of its digits is 1417500, while the sum is 48.

The square root of 55667559 is about 7461.0695613967. The cubic root of 55667559 is about 381.8276659312.

The spelling of 55667559 in words is "fifty-five million, six hundred sixty-seven thousand, five hundred fifty-nine".