162987255 has 16 divisors (see below), whose sum is σ = 289755360. Its totient is φ = 86926464.

The previous prime is 162987247. The next prime is 162987271. The reversal of 162987255 is 552789261.

Added to its reverse (552789261) it gives a square (715776516 = 26754²).

It is not a de Polignac number, because 162987255 - 2³ = 162987247 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 162987255.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 603522 + ... + 603791.

It is an arithmetic number, because the mean of its divisors is an integer number (18109710).

Almost surely, 2^162987255 is an apocalyptic number.

162987255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

162987255 is a deficient number, since it is larger than the sum of its proper divisors (126768105).

162987255 is a wasteful number, since it uses less digits than its factorization.

162987255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1207327 (or 1207321 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The square root of 162987255 is about 12766.6461923247. The cubic root of 162987255 is about 546.2413194829.

Adding to 162987255 its reverse (552789261), we get a square (715776516 = 26754²).

The spelling of 162987255 in words is "one hundred sixty-two million, nine hundred eighty-seven thousand, two hundred fifty-five".