101520520 has 32 divisors (see below), whose sum is σ = 230995800. Its totient is φ = 40150528.

The previous prime is 101520487. The next prime is 101520539. The reversal of 101520520 is 25025101.

It can be written as a sum of positive squares in 4 ways, for example, as 84529636 + 16990884 = 9194^2 + 4122^2 .

It is a junction number, because it is equal to n+sod(n) for n = 101520494 and 101520503.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10699 + ... + 17818.

Almost surely, 2^101520520 is an apocalyptic number.

101520520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101520520 is an abundant number, since it is smaller than the sum of its proper divisors (129475280).

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

101520520 is a wasteful number, since it uses less digits than its factorization.

101520520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28617 (or 28613 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 101520520 is about 10075.7391788394. The cubic root of 101520520 is about 466.4996023305.

Adding to 101520520 its reverse (25025101), we get a palindrome (126545621).

The spelling of 101520520 in words is "one hundred one million, five hundred twenty thousand, five hundred twenty".