55864998 has 96 divisors (see below), whose sum is σ = 148072320. Its totient is φ = 15558480.

The previous prime is 55864981. The next prime is 55865003. The reversal of 55864998 is 89946855.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 113533 + ... + 114023.

It is an arithmetic number, because the mean of its divisors is an integer number (1542420).

Almost surely, 2^55864998 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55864998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74036160).

55864998 is an abundant number, since it is smaller than the sum of its proper divisors (92207322).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55864998 is a wasteful number, since it uses less digits than its factorization.

55864998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559 (or 546 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 54.

The square root of 55864998 is about 7474.2891300779. The cubic root of 55864998 is about 382.2785492462.

It can be divided in two parts, 558 and 64998, that added together give a palindrome (65556).

The spelling of 55864998 in words is "fifty-five million, eight hundred sixty-four thousand, nine hundred ninety-eight".