20524430501 has 2 divisors, whose sum is σ = 20524430502. Its totient is φ = 20524430500.

The previous prime is 20524430473. The next prime is 20524430551. The reversal of 20524430501 is 10503442502.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10650033601 + 9874396900 = 103199^2 + 99370^2 .

It is a cyclic number.

It is not a de Polignac number, because 20524430501 - 2¹⁴ = 20524414117 is a prime.

It is a super-2 number, since 2×20524430501² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20524430551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10262215250 + 10262215251.

It is an arithmetic number, because the mean of its divisors is an integer number (10262215251).

Almost surely, 2^20524430501 is an apocalyptic number.

It is an amenable number.

20524430501 is a deficient number, since it is larger than the sum of its proper divisors (1).

20524430501 is an equidigital number, since it uses as much as digits as its factorization.

20524430501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4800, while the sum is 26.

The spelling of 20524430501 in words is "twenty billion, five hundred twenty-four million, four hundred thirty thousand, five hundred one".