10523421 has 6 divisors (see below), whose sum is σ = 15200510. Its totient is φ = 7015608.

The previous prime is 10523393. The next prime is 10523437. The reversal of 10523421 is 12432501.

10523421 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 6579225 + 3944196 = 2565^2 + 1986^2 .

It is not a de Polignac number, because 10523421 - 2⁵ = 10523389 is a prime.

It is a super-2 number, since 2×10523421² = 221484779086482, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10523394 and 10523403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10523021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 584626 + ... + 584643.

Almost surely, 2^10523421 is an apocalyptic number.

It is an amenable number.

10523421 is a deficient number, since it is larger than the sum of its proper divisors (4677089).

10523421 is a wasteful number, since it uses less digits than its factorization.

10523421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1169275 (or 1169272 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 10523421 is about 3243.9822749207. The cubic root of 10523421 is about 219.1386499260.

Adding to 10523421 its reverse (12432501), we get a palindrome (22955922).

The spelling of 10523421 in words is "ten million, five hundred twenty-three thousand, four hundred twenty-one".