55849558 has 4 divisors (see below), whose sum is σ = 83774340. Its totient is φ = 27924778.

The previous prime is 55849553. The next prime is 55849559. The reversal of 55849558 is 85594855.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 85594855 = 5 ⋅17118971.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55849553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13962388 + ... + 13962391.

It is an arithmetic number, because the mean of its divisors is an integer number (20943585).

Almost surely, 2^55849558 is an apocalyptic number.

55849558 is a deficient number, since it is larger than the sum of its proper divisors (27924782).

55849558 is a wasteful number, since it uses less digits than its factorization.

55849558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27924781.

The product of its digits is 1440000, while the sum is 49.

The square root of 55849558 is about 7473.2561845557. The cubic root of 55849558 is about 382.2433278800.

The spelling of 55849558 in words is "fifty-five million, eight hundred forty-nine thousand, five hundred fifty-eight".