538542551 has 2 divisors, whose sum is σ = 538542552. Its totient is φ = 538542550.

The previous prime is 538542533. The next prime is 538542553. The reversal of 538542551 is 155245835.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 538542551 - 2¹⁴ = 538526167 is a prime.

It is a Sophie Germain prime.

Together with 538542553, 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 (538542553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269271275 + 269271276.

It is an arithmetic number, because the mean of its divisors is an integer number (269271276).

Almost surely, 2^538542551 is an apocalyptic number.

538542551 is a deficient number, since it is larger than the sum of its proper divisors (1).

538542551 is an equidigital number, since it uses as much as digits as its factorization.

538542551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120000, while the sum is 38.

The square root of 538542551 is about 23206.5195796354. The cubic root of 538542551 is about 813.5920090980.

The spelling of 538542551 in words is "five hundred thirty-eight million, five hundred forty-two thousand, five hundred fifty-one".