2401509 has 16 divisors (see below), whose sum is σ = 3553344. Its totient is φ = 1430400.

The previous prime is 2401501. The next prime is 2401513. The reversal of 2401509 is 9051042.

It is not a de Polignac number, because 2401509 - 2³ = 2401501 is a prime.

It is a plaindrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2401501) 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, 1417 + ... + 2609.

It is an arithmetic number, because the mean of its divisors is an integer number (222084).

2^2401509 is an apocalyptic number.

It is an amenable number.

2401509 is a deficient number, since it is larger than the sum of its proper divisors (1151835).

2401509 is a wasteful number, since it uses less digits than its factorization.

2401509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1268.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 2401509 is about 1549.6802896082. The cubic root of 2401509 is about 133.9146445353.

The spelling of 2401509 in words is "two million, four hundred one thousand, five hundred nine".