55190030 has 16 divisors (see below), whose sum is σ = 113533920. Its totient is φ = 18922272.

The previous prime is 55190029. The next prime is 55190071. The reversal of 55190030 is 3009155.

It is a super-2 number, since 2×55190030² = 6091878822801800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55189978 and 55190005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 394145 + ... + 394284.

It is an arithmetic number, because the mean of its divisors is an integer number (7095870).

Almost surely, 2^55190030 is an apocalyptic number.

55190030 is an abundant number, since it is smaller than the sum of its proper divisors (58343890).

55190030 is a wasteful number, since it uses less digits than its factorization.

55190030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788443.

The product of its (nonzero) digits is 675, while the sum is 23.

The square root of 55190030 is about 7428.9992596581. Note that the first 3 decimals coincide. The cubic root of 55190030 is about 380.7327274988.

Adding to 55190030 its reverse (3009155), we get a palindrome (58199185).

The spelling of 55190030 in words is "fifty-five million, one hundred ninety thousand, thirty".