101255520 has 96 divisors (see below), whose sum is σ = 320900832. Its totient is φ = 26836992.

The previous prime is 101255513. The next prime is 101255521. The reversal of 101255520 is 25552101.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101255521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92094 + ... + 93186.

It is an arithmetic number, because the mean of its divisors is an integer number (3342717).

Almost surely, 2^101255520 is an apocalyptic number.

101255520 is a gapful number since it is divisible by the number (10) 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 101255520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160450416).

101255520 is an abundant number, since it is smaller than the sum of its proper divisors (219645312).

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

101255520 is a wasteful number, since it uses less digits than its factorization.

101255520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1304 (or 1296 counting only the distinct ones).

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

The square root of 101255520 is about 10062.5801860159. The cubic root of 101255520 is about 466.0933458248.

The spelling of 101255520 in words is "one hundred one million, two hundred fifty-five thousand, five hundred twenty".