1501601 has 4 divisors (see below), whose sum is σ = 1566912. Its totient is φ = 1436292.

The previous prime is 1501597. The next prime is 1501607. The reversal of 1501601 is 1061051.

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: 1061051 = 491 ⋅2161.

It is a cyclic number.

It is not a de Polignac number, because 1501601 - 2² = 1501597 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1501607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32621 + ... + 32666.

It is an arithmetic number, because the mean of its divisors is an integer number (391728).

2^1501601 is an apocalyptic number.

It is an amenable number.

1501601 is a deficient number, since it is larger than the sum of its proper divisors (65311).

1501601 is an equidigital number, since it uses as much as digits as its factorization.

1501601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65310.

The product of its (nonzero) digits is 30, while the sum is 14.

The square root of 1501601 is about 1225.3983025939. The cubic root of 1501601 is about 114.5121361633.

Adding to 1501601 its reverse (1061051), we get a palindrome (2562652).

The spelling of 1501601 in words is "one million, five hundred one thousand, six hundred one".