10521604501 has 4 divisors (see below), whose sum is σ = 10525072012. Its totient is φ = 10518136992.

The previous prime is 10521604469. The next prime is 10521604531. The reversal of 10521604501 is 10540612501.

It is a happy number.

10521604501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6546428100 + 3975176401 = 80910^2 + 63049^2 .

It is a cyclic number.

It is not a de Polignac number, because 10521604501 - 2⁵ = 10521604469 is a prime.

It is a super-2 number, since 2×10521604501² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10521604531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1729200 + ... + 1735273.

It is an arithmetic number, because the mean of its divisors is an integer number (2631268003).

Almost surely, 2^10521604501 is an apocalyptic number.

It is an amenable number.

10521604501 is a deficient number, since it is larger than the sum of its proper divisors (3467511).

10521604501 is an equidigital number, since it uses as much as digits as its factorization.

10521604501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3467510.

The product of its (nonzero) digits is 1200, while the sum is 25.

The spelling of 10521604501 in words is "ten billion, five hundred twenty-one million, six hundred four thousand, five hundred one".