55219350 has 24 divisors (see below), whose sum is σ = 136944360. Its totient is φ = 14725120.

The previous prime is 55219337. The next prime is 55219379. The reversal of 55219350 is 5391255.

It is a super-2 number, since 2×55219350² = 6098353228845000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

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 11 ways as a sum of consecutive naturals, for example, 183915 + ... + 184214.

It is an arithmetic number, because the mean of its divisors is an integer number (5706015).

Almost surely, 2^55219350 is an apocalyptic number.

55219350 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55219350 is an abundant number, since it is smaller than the sum of its proper divisors (81725010).

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

55219350 is a wasteful number, since it uses less digits than its factorization.

55219350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368144 (or 368139 counting only the distinct ones).

The product of its (nonzero) digits is 6750, while the sum is 30.

The square root of 55219350 is about 7430.9723455279. The cubic root of 55219350 is about 380.8001376653.

The spelling of 55219350 in words is "fifty-five million, two hundred nineteen thousand, three hundred fifty".