101550520 has 128 divisors (see below), whose sum is σ = 260029440. Its totient is φ = 35481600.

The previous prime is 101550511. The next prime is 101550521. The reversal of 101550520 is 25055101.

It is a super-2 number, since 2×101550520² = 20625016224540800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101550521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 672445 + ... + 672595.

It is an arithmetic number, because the mean of its divisors is an integer number (2031480).

Almost surely, 2^101550520 is an apocalyptic number.

101550520 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 101550520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130014720).

101550520 is an abundant number, since it is smaller than the sum of its proper divisors (158478920).

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

101550520 is a wasteful number, since it uses less digits than its factorization.

101550520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245 (or 241 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 19.

The square root of 101550520 is about 10077.2277933964. The cubic root of 101550520 is about 466.5455490670.

The spelling of 101550520 in words is "one hundred one million, five hundred fifty thousand, five hundred twenty".