55135630 has 16 divisors (see below), whose sum is σ = 108266544. Its totient is φ = 20049280.

The previous prime is 55135621. The next prime is 55135667. The reversal of 55135630 is 3653155.

It is a happy number.

55135630 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250507 + ... + 250726.

It is an arithmetic number, because the mean of its divisors is an integer number (6766659).

Almost surely, 2^55135630 is an apocalyptic number.

55135630 is a deficient number, since it is larger than the sum of its proper divisors (53130914).

55135630 is a wasteful number, since it uses less digits than its factorization.

55135630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501251.

The product of its (nonzero) digits is 6750, while the sum is 28.

The square root of 55135630 is about 7425.3370293880. The cubic root of 55135630 is about 380.6075921605.

Adding to 55135630 its reverse (3653155), we get a palindrome (58788785).

The spelling of 55135630 in words is "fifty-five million, one hundred thirty-five thousand, six hundred thirty".