55153287 has 48 divisors (see below), whose sum is σ = 100638720. Its totient is φ = 28359936.

The previous prime is 55153283. The next prime is 55153289. The reversal of 55153287 is 78235155.

It is not a de Polignac number, because 55153287 - 2² = 55153283 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55153283) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23514 + ... + 25752.

It is an arithmetic number, because the mean of its divisors is an integer number (2096640).

Almost surely, 2^55153287 is an apocalyptic number.

55153287 is a deficient number, since it is larger than the sum of its proper divisors (45485433).

55153287 is a wasteful number, since it uses less digits than its factorization.

55153287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2292 (or 2289 counting only the distinct ones).

The product of its digits is 42000, while the sum is 36.

The square root of 55153287 is about 7426.5259038126. The cubic root of 55153287 is about 380.6482172577.

The spelling of 55153287 in words is "fifty-five million, one hundred fifty-three thousand, two hundred eighty-seven".