55687111 has 8 divisors (see below), whose sum is σ = 56322000. Its totient is φ = 55056000.

The previous prime is 55687069. The next prime is 55687123. The reversal of 55687111 is 11178655.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55687111 - 2⁹ = 55686599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55687141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36655 + ... + 38143.

It is an arithmetic number, because the mean of its divisors is an integer number (7040250).

Almost surely, 2^55687111 is an apocalyptic number.

55687111 is a deficient number, since it is larger than the sum of its proper divisors (634889).

55687111 is a wasteful number, since it uses less digits than its factorization.

55687111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1889.

The product of its digits is 8400, while the sum is 34.

The square root of 55687111 is about 7462.3797142735. The cubic root of 55687111 is about 381.8723635420.

The spelling of 55687111 in words is "fifty-five million, six hundred eighty-seven thousand, one hundred eleven".