55858559 has 16 divisors (see below), whose sum is σ = 60672000. Its totient is φ = 51274080.

The previous prime is 55858529. The next prime is 55858577. The reversal of 55858559 is 95585855.

It is a cyclic number.

It is not a de Polignac number, because 55858559 - 2⁸ = 55858303 is a prime.

It is a super-2 number, since 2×55858559² = 6240357227112962, 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 (55858519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111692 + ... + 112190.

It is an arithmetic number, because the mean of its divisors is an integer number (3792000).

Almost surely, 2^55858559 is an apocalyptic number.

55858559 is a deficient number, since it is larger than the sum of its proper divisors (4813441).

55858559 is a wasteful number, since it uses less digits than its factorization.

55858559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710.

The product of its digits is 1800000, while the sum is 50.

The square root of 55858559 is about 7473.8583743606. The cubic root of 55858559 is about 382.2638615393.

The spelling of 55858559 in words is "fifty-five million, eight hundred fifty-eight thousand, five hundred fifty-nine".