855377287 has 6 divisors (see below), whose sum is σ = 908653688. Its totient is φ = 805060704.

The previous prime is 855377273. The next prime is 855377293. The reversal of 855377287 is 782773558.

It is a happy number.

855377287 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-855377287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855377297) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1479603 + ... + 1480180.

Almost surely, 2^855377287 is an apocalyptic number.

855377287 is a deficient number, since it is larger than the sum of its proper divisors (53276401).

855377287 is a wasteful number, since it uses less digits than its factorization.

855377287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2959817 (or 2959800 counting only the distinct ones).

The product of its digits is 3292800, while the sum is 52.

The square root of 855377287 is about 29246.8337944469. The cubic root of 855377287 is about 949.2615820530.

The spelling of 855377287 in words is "eight hundred fifty-five million, three hundred seventy-seven thousand, two hundred eighty-seven".