55135260 has 72 divisors (see below), whose sum is σ = 168395136. Its totient is φ = 14601600.

The previous prime is 55135253. The next prime is 55135271. The reversal of 55135260 is 6253155.

55135260 is a `hidden beast` number, since 551 + 3 + 52 + 60 = 666.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 27285 + ... + 29235.

Almost surely, 2^55135260 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55135260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84197568).

55135260 is an abundant number, since it is smaller than the sum of its proper divisors (113259876).

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

55135260 is a wasteful number, since it uses less digits than its factorization.

55135260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2123 (or 2118 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 55135260 is about 7425.3121146522. The cubic root of 55135260 is about 380.6067407744.

The spelling of 55135260 in words is "fifty-five million, one hundred thirty-five thousand, two hundred sixty".