55693287 has 24 divisors (see below), whose sum is σ = 86886800. Its totient is φ = 34172928.

The previous prime is 55693273. The next prime is 55693303. The reversal of 55693287 is 78239655.

It is a happy number.

55693287 is a `hidden beast` number, since 5 + 569 + 3 + 2 + 87 = 666.

It is not a de Polignac number, because 55693287 - 2⁴ = 55693271 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55693217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72039 + ... + 72807.

Almost surely, 2^55693287 is an apocalyptic number.

55693287 is a deficient number, since it is larger than the sum of its proper divisors (31193513).

55693287 is a wasteful number, since it uses less digits than its factorization.

55693287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1407 (or 1404 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 55693287 is about 7462.7935118158. The cubic root of 55693287 is about 381.8864802529.

The spelling of 55693287 in words is "fifty-five million, six hundred ninety-three thousand, two hundred eighty-seven".