55135810 has 16 divisors (see below), whose sum is σ = 99563256. Its totient is φ = 21983488.

The previous prime is 55135793. The next prime is 55135819. The reversal of 55135810 is 1853155.

It can be written as a sum of positive squares in 4 ways, for example, as 22061809 + 33074001 = 4697^2 + 5751^2 .

It is a super-2 number, since 2×55135810² = 6079915088712200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55135819) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5527 + ... + 11866.

Almost surely, 2^55135810 is an apocalyptic number.

55135810 is a deficient number, since it is larger than the sum of its proper divisors (44427446).

55135810 is a wasteful number, since it uses less digits than its factorization.

55135810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17717.

The product of its (nonzero) digits is 3000, while the sum is 28.

The square root of 55135810 is about 7425.3491500400. The cubic root of 55135810 is about 380.6080063469.

Adding to 55135810 its reverse (1853155), we get a palindrome (56988965).

It can be divided in two parts, 551358 and 10, that added together give a cube (551368 = 82³).

The spelling of 55135810 in words is "fifty-five million, one hundred thirty-five thousand, eight hundred ten".