55136268 has 48 divisors (see below), whose sum is σ = 155944320. Its totient is φ = 16707600.

The previous prime is 55136261. The next prime is 55136269. The reversal of 55136268 is 86263155.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55136261) 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, 22018 + ... + 24393.

It is an arithmetic number, because the mean of its divisors is an integer number (3248840).

Almost surely, 2^55136268 is an apocalyptic number.

It is an amenable number.

55136268 is an abundant number, since it is smaller than the sum of its proper divisors (100808052).

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

55136268 is a wasteful number, since it uses less digits than its factorization.

55136268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46435 (or 46427 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 55136268 is about 7425.3799902766. The cubic root of 55136268 is about 380.6090602172.

It can be divided in two parts, 5513 and 6268, that added together give a triangular number (11781 = T₁₅₃).

The spelling of 55136268 in words is "fifty-five million, one hundred thirty-six thousand, two hundred sixty-eight".