55136502 has 12 divisors (see below), whose sum is σ = 119462460. Its totient is φ = 18378828.

The previous prime is 55136467. The next prime is 55136519. The reversal of 55136502 is 20563155.

55136502 is a `hidden beast` number, since 5 + 5 + 1 + 3 + 650 + 2 = 666.

55136502 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 5 ways as a sum of consecutive naturals, for example, 1531552 + ... + 1531587.

It is an arithmetic number, because the mean of its divisors is an integer number (9955205).

Almost surely, 2^55136502 is an apocalyptic number.

55136502 is an abundant number, since it is smaller than the sum of its proper divisors (64325958).

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

55136502 is a wasteful number, since it uses less digits than its factorization.

55136502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3063147 (or 3063144 counting only the distinct ones).

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

The square root of 55136502 is about 7425.3957470292. The cubic root of 55136502 is about 380.6095986553.

Adding to 55136502 its reverse (20563155), we get a palindrome (75699657).

The spelling of 55136502 in words is "fifty-five million, one hundred thirty-six thousand, five hundred two".