55862887 has 2 divisors, whose sum is σ = 55862888. Its totient is φ = 55862886.

The previous prime is 55862879. The next prime is 55862923. The reversal of 55862887 is 78826855.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55862887 - 2³ = 55862879 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55862887.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55862987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27931443 + 27931444.

It is an arithmetic number, because the mean of its divisors is an integer number (27931444).

Almost surely, 2^55862887 is an apocalyptic number.

55862887 is a deficient number, since it is larger than the sum of its proper divisors (1).

55862887 is an equidigital number, since it uses as much as digits as its factorization.

55862887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1075200, while the sum is 49.

The square root of 55862887 is about 7474.1479113007. The cubic root of 55862887 is about 382.2737340655.

The spelling of 55862887 in words is "fifty-five million, eight hundred sixty-two thousand, eight hundred eighty-seven".