55804950 has 84 divisors (see below), whose sum is σ = 155726268. Its totient is φ = 14871600.

The previous prime is 55804949. The next prime is 55804963. The reversal of 55804950 is 5940855.

It is a happy number.

It is a super-2 number, since 2×55804950² = 6228384889005000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 35685 + ... + 37215.

Almost surely, 2^55804950 is an apocalyptic number.

55804950 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 55804950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77863134).

55804950 is an abundant number, since it is smaller than the sum of its proper divisors (99921318).

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

55804950 is a wasteful number, since it uses less digits than its factorization.

55804950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1561 (or 1541 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The square root of 55804950 is about 7470.2710794187. The cubic root of 55804950 is about 382.1415326724.

The spelling of 55804950 in words is "fifty-five million, eight hundred four thousand, nine hundred fifty".