15050421521501 has 2 divisors, whose sum is σ = 15050421521502. Its totient is φ = 15050421521500.

The previous prime is 15050421521431. The next prime is 15050421521503. The reversal of 15050421521501 is 10512512405051.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7798447204900 + 7251974316601 = 2792570^2 + 2692949^2 .

It is a cyclic number.

It is not a de Polignac number, because 15050421521501 - 2²⁶ = 15050354412637 is a prime.

Together with 15050421521503, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15050421521503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7525210760750 + 7525210760751.

It is an arithmetic number, because the mean of its divisors is an integer number (7525210760751).

Almost surely, 2^{15050421521501} is an apocalyptic number.

It is an amenable number.

15050421521501 is a deficient number, since it is larger than the sum of its proper divisors (1).

15050421521501 is an equidigital number, since it uses as much as digits as its factorization.

15050421521501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10000, while the sum is 32.

Adding to 15050421521501 its reverse (10512512405051), we get a palindrome (25562933926552).

The spelling of 15050421521501 in words is "fifteen trillion, fifty billion, four hundred twenty-one million, five hundred twenty-one thousand, five hundred one".