538501501 has 2 divisors, whose sum is σ = 538501502. Its totient is φ = 538501500.

The previous prime is 538501499. The next prime is 538501511. The reversal of 538501501 is 105105835.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 449652025 + 88849476 = 21205^2 + 9426^2 .

It is a cyclic number.

It is not a de Polignac number, because 538501501 - 2¹ = 538501499 is a prime.

Together with 538501499, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 538501501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (538501511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269250750 + 269250751.

It is an arithmetic number, because the mean of its divisors is an integer number (269250751).

Almost surely, 2^538501501 is an apocalyptic number.

It is an amenable number.

538501501 is a deficient number, since it is larger than the sum of its proper divisors (1).

538501501 is an equidigital number, since it uses as much as digits as its factorization.

538501501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3000, while the sum is 28.

The square root of 538501501 is about 23205.6351130496. The cubic root of 538501501 is about 813.5713367602.

The spelling of 538501501 in words is "five hundred thirty-eight million, five hundred one thousand, five hundred one".