503001601 has 4 divisors (see below), whose sum is σ = 503105092. Its totient is φ = 502898112.

The previous prime is 503001563. The next prime is 503001623. The reversal of 503001601 is 106100305.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 55890576 + 447111025 = 7476^2 + 21145^2 .

It is a cyclic number.

It is not a de Polignac number, because 503001601 - 2¹⁵ = 502968833 is a prime.

It is a super-2 number, since 2×503001601² = 506021221217126402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (503001671) 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, 44076 + ... + 54301.

It is an arithmetic number, because the mean of its divisors is an integer number (125776273).

Almost surely, 2^503001601 is an apocalyptic number.

It is an amenable number.

503001601 is a deficient number, since it is larger than the sum of its proper divisors (103491).

503001601 is an equidigital number, since it uses as much as digits as its factorization.

503001601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103490.

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

The square root of 503001601 is about 22427.6971845083. The cubic root of 503001601 is about 795.2856065449.

Adding to 503001601 its reverse (106100305), we get a palindrome (609101906).

The spelling of 503001601 in words is "five hundred three million, one thousand, six hundred one".