255101520 has 80 divisors (see below), whose sum is σ = 795788352. Its totient is φ = 67599360.

The previous prime is 255101491. The next prime is 255101531. The reversal of 255101520 is 25101552.

It is a tau number, because it is divible by the number of its divisors (80).

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, 35860 + ... + 42380.

Almost surely, 2^255101520 is an apocalyptic number.

255101520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255101520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (397894176).

255101520 is an abundant number, since it is smaller than the sum of its proper divisors (540686832).

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

255101520 is a wasteful number, since it uses less digits than its factorization.

255101520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6700 (or 6694 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 255101520 is about 15971.8978208602. The cubic root of 255101520 is about 634.2167124957.

The spelling of 255101520 in words is "two hundred fifty-five million, one hundred one thousand, five hundred twenty".