255215898 has 96 divisors (see below), whose sum is σ = 654151680. Its totient is φ = 70398720.

The previous prime is 255215897. The next prime is 255215959. The reversal of 255215898 is 898512552.

It is a happy number.

255215898 is a `hidden beast` number, since 2 + 552 + 1 + 5 + 8 + 98 = 666.

255215898 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (255215893) 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, 655888 + ... + 656276.

It is an arithmetic number, because the mean of its divisors is an integer number (6814080).

Almost surely, 2^255215898 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255215898, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (327075840).

255215898 is an abundant number, since it is smaller than the sum of its proper divisors (398935782).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255215898 is a wasteful number, since it uses less digits than its factorization.

255215898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572 (or 569 counting only the distinct ones).

The product of its digits is 288000, while the sum is 45.

The square root of 255215898 is about 15975.4780210171. The cubic root of 255215898 is about 634.3114847003.

It can be divided in two parts, 255 and 215898, that added together give a triangular number (216153 = T₆₅₇).

The spelling of 255215898 in words is "two hundred fifty-five million, two hundred fifteen thousand, eight hundred ninety-eight".