10440521 has 16 divisors (see below), whose sum is σ = 13267968. Its totient is φ = 7992000.

The previous prime is 10440517. The next prime is 10440539. The reversal of 10440521 is 12504401.

It is a cyclic number.

It is not a de Polignac number, because 10440521 - 2² = 10440517 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10440521.

It is not an unprimeable number, because it can be changed into a prime (10440511) 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, 971 + ... + 4671.

It is an arithmetic number, because the mean of its divisors is an integer number (829248).

Almost surely, 2^10440521 is an apocalyptic number.

It is an amenable number.

10440521 is a deficient number, since it is larger than the sum of its proper divisors (2827447).

10440521 is a wasteful number, since it uses less digits than its factorization.

10440521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3752.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 10440521 is about 3231.1795060009. The cubic root of 10440521 is about 218.5616985268.

Adding to 10440521 its reverse (12504401), we get a palindrome (22944922).

The spelling of 10440521 in words is "ten million, four hundred forty thousand, five hundred twenty-one".