55299860 has 96 divisors (see below), whose sum is σ = 146361600. Its totient is φ = 17049600.

The previous prime is 55299821. The next prime is 55299887. The reversal of 55299860 is 6899255.

It is a super-3 number, since 3×55299860³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 229340 + ... + 229580.

It is an arithmetic number, because the mean of its divisors is an integer number (1524600).

Almost surely, 2^55299860 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55299860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73180800).

55299860 is an abundant number, since it is smaller than the sum of its proper divisors (91061740).

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

55299860 is a wasteful number, since it uses less digits than its factorization.

55299860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417 (or 415 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 44.

The square root of 55299860 is about 7436.3875638646. The cubic root of 55299860 is about 380.9851170926.

The spelling of 55299860 in words is "fifty-five million, two hundred ninety-nine thousand, eight hundred sixty".