10521401 has 8 divisors (see below), whose sum is σ = 11695104. Its totient is φ = 9383920.

The previous prime is 10521377. The next prime is 10521437. The reversal of 10521401 is 10412501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10521401 - 2¹⁸ = 10259257 is a prime.

It is a super-2 number, since 2×10521401² = 221399758005602, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10521451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8441 + ... + 9606.

It is an arithmetic number, because the mean of its divisors is an integer number (1461888).

Almost surely, 2^10521401 is an apocalyptic number.

10521401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10521401 is a deficient number, since it is larger than the sum of its proper divisors (1173703).

10521401 is a wasteful number, since it uses less digits than its factorization.

10521401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18111.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 10521401 is about 3243.6709142575. The cubic root of 10521401 is about 219.1246276038.

Adding to 10521401 its reverse (10412501), we get a palindrome (20933902).

Subtracting from 10521401 its reverse (10412501), we obtain a square (108900 = 330²).

The spelling of 10521401 in words is "ten million, five hundred twenty-one thousand, four hundred one".