523501001 has 2 divisors, whose sum is σ = 523501002. Its totient is φ = 523501000.

The previous prime is 523500979. The next prime is 523501019. The reversal of 523501001 is 100105325.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 320410000 + 203091001 = 17900^2 + 14251^2 .

It is a cyclic number.

It is not a de Polignac number, because 523501001 - 2¹⁴ = 523484617 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (523501801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261750500 + 261750501.

It is an arithmetic number, because the mean of its divisors is an integer number (261750501).

Almost surely, 2^523501001 is an apocalyptic number.

It is an amenable number.

523501001 is a deficient number, since it is larger than the sum of its proper divisors (1).

523501001 is an equidigital number, since it uses as much as digits as its factorization.

523501001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 523501001 is about 22880.1442521676. The cubic root of 523501001 is about 805.9458044701.

Adding to 523501001 its reverse (100105325), we get a palindrome (623606326).

It can be divided in two parts, 52 and 3501001, that added together give a palindrome (3501053).

The spelling of 523501001 in words is "five hundred twenty-three million, five hundred one thousand, one".