55687653 has 48 divisors (see below), whose sum is σ = 95047680. Its totient is φ = 30764448.

The previous prime is 55687579. The next prime is 55687657. The reversal of 55687653 is 35678655.

It is not a de Polignac number, because 55687653 - 2⁸ = 55687397 is a prime.

It is a super-2 number, since 2×55687653² = 6202229393296818, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 55687599 and 55687608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55687657) 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, 333376 + ... + 333542.

It is an arithmetic number, because the mean of its divisors is an integer number (1980160).

Almost surely, 2^55687653 is an apocalyptic number.

It is an amenable number.

55687653 is a deficient number, since it is larger than the sum of its proper divisors (39360027).

55687653 is a wasteful number, since it uses less digits than its factorization.

55687653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326 (or 323 counting only the distinct ones).

The product of its digits is 756000, while the sum is 45.

The square root of 55687653 is about 7462.4160296783. The cubic root of 55687653 is about 381.8736024532.

It can be divided in two parts, 556 and 87653, that added together give a square (88209 = 297²).

The spelling of 55687653 in words is "fifty-five million, six hundred eighty-seven thousand, six hundred fifty-three".