1509601 has 4 divisors (see below), whose sum is σ = 1544752. Its totient is φ = 1474452.

The previous prime is 1509589. The next prime is 1509623. The reversal of 1509601 is 1069051.

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.

It is a cyclic number.

It is not a de Polignac number, because 1509601 - 2¹⁷ = 1378529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1509631) 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, 17511 + ... + 17596.

It is an arithmetic number, because the mean of its divisors is an integer number (386188).

2^1509601 is an apocalyptic number.

It is an amenable number.

1509601 is a deficient number, since it is larger than the sum of its proper divisors (35151).

1509601 is an equidigital number, since it uses as much as digits as its factorization.

1509601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35150.

The product of its (nonzero) digits is 270, while the sum is 22.

The square root of 1509601 is about 1228.6582112207. The cubic root of 1509601 is about 114.7151361628.

The spelling of 1509601 in words is "one million, five hundred nine thousand, six hundred one".