1503601 has 4 divisors (see below), whose sum is σ = 1640304. Its totient is φ = 1366900.

The previous prime is 1503583. The next prime is 1503611. The reversal of 1503601 is 1063051.

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 1503601 - 2⁷ = 1503473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1503611) 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, 68335 + ... + 68356.

It is an arithmetic number, because the mean of its divisors is an integer number (410076).

2^1503601 is an apocalyptic number.

1503601 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1503601 is a deficient number, since it is larger than the sum of its proper divisors (136703).

1503601 is a wasteful number, since it uses less digits than its factorization.

1503601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136702.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 1503601 is about 1226.2140922368. The cubic root of 1503601 is about 114.5629536280.

Adding to 1503601 its reverse (1063051), we get a palindrome (2566652).

The spelling of 1503601 in words is "one million, five hundred three thousand, six hundred one".