15532020253 has 2 divisors, whose sum is σ = 15532020254. Its totient is φ = 15532020252.

The previous prime is 15532020191. The next prime is 15532020271. The reversal of 15532020253 is 35202023551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15521920569 + 10099684 = 124587^2 + 3178^2 .

It is an emirp because it is prime and its reverse (35202023551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15532020253 - 2²⁹ = 14995149341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15532020353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7766010126 + 7766010127.

It is an arithmetic number, because the mean of its divisors is an integer number (7766010127).

Almost surely, 2^15532020253 is an apocalyptic number.

It is an amenable number.

15532020253 is a deficient number, since it is larger than the sum of its proper divisors (1).

15532020253 is an equidigital number, since it uses as much as digits as its factorization.

15532020253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9000, while the sum is 28.

The spelling of 15532020253 in words is "fifteen billion, five hundred thirty-two million, twenty thousand, two hundred fifty-three".