538488551 has 2 divisors, whose sum is σ = 538488552. Its totient is φ = 538488550.

The previous prime is 538488539. The next prime is 538488553. The reversal of 538488551 is 155884835.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-538488551 is a prime.

Together with 538488553, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 538488496 and 538488505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (538488553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269244275 + 269244276.

It is an arithmetic number, because the mean of its divisors is an integer number (269244276).

Almost surely, 2^538488551 is an apocalyptic number.

538488551 is a deficient number, since it is larger than the sum of its proper divisors (1).

538488551 is an equidigital number, since it uses as much as digits as its factorization.

538488551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 768000, while the sum is 47.

The square root of 538488551 is about 23205.3560843181. The cubic root of 538488551 is about 813.5648150618.

The spelling of 538488551 in words is "five hundred thirty-eight million, four hundred eighty-eight thousand, five hundred fifty-one".