55005830 has 32 divisors (see below), whose sum is σ = 109548288. Its totient is φ = 19717600.

The previous prime is 55005809. The next prime is 55005833. The reversal of 55005830 is 3850055.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 55005830.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55005833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4289 + ... + 11331.

It is an arithmetic number, because the mean of its divisors is an integer number (3423384).

Almost surely, 2^55005830 is an apocalyptic number.

55005830 is a deficient number, since it is larger than the sum of its proper divisors (54542458).

55005830 is a wasteful number, since it uses less digits than its factorization.

55005830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7132.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 55005830 is about 7416.5915352000. The cubic root of 55005830 is about 380.3086827001.

Adding to 55005830 its reverse (3850055), we get a palindrome (58855885).

The spelling of 55005830 in words is "fifty-five million, five thousand, eight hundred thirty".