10521500 has 48 divisors (see below), whose sum is σ = 25081056. Its totient is φ = 3824000.

The previous prime is 10521499. The next prime is 10521503. The reversal of 10521500 is 512501.

It is a super-2 number, since 2×10521500² = 221403924500000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10521503) 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, 4544 + ... + 6456.

It is an arithmetic number, because the mean of its divisors is an integer number (522522).

Almost surely, 2^10521500 is an apocalyptic number.

10521500 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 10521500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12540528).

10521500 is an abundant number, since it is smaller than the sum of its proper divisors (14559556).

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

10521500 is a wasteful number, since it uses less digits than its factorization.

10521500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1943 (or 1931 counting only the distinct ones).

The product of its (nonzero) digits is 50, while the sum is 14.

The square root of 10521500 is about 3243.6861747093. The cubic root of 10521500 is about 219.1253148782.

It can be divided in two parts, 1052 and 1500, that added together give a palindrome (2552).

The spelling of 10521500 in words is "ten million, five hundred twenty-one thousand, five hundred".