10401509 has 4 divisors (see below), whose sum is σ = 10476480. Its totient is φ = 10326540.

The previous prime is 10401499. The next prime is 10401529. The reversal of 10401509 is 90510401.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90510401 = 113 ⋅800977.

It is a cyclic number.

It is not a de Polignac number, because 10401509 - 2⁸ = 10401253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10401529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37277 + ... + 37554.

It is an arithmetic number, because the mean of its divisors is an integer number (2619120).

Almost surely, 2^10401509 is an apocalyptic number.

It is an amenable number.

10401509 is a deficient number, since it is larger than the sum of its proper divisors (74971).

10401509 is an equidigital number, since it uses as much as digits as its factorization.

10401509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74970.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 10401509 is about 3225.1370513515. The cubic root of 10401509 is about 218.2891332290.

The spelling of 10401509 in words is "ten million, four hundred one thousand, five hundred nine".