525112391 has 2 divisors, whose sum is σ = 525112392. Its totient is φ = 525112390.

The previous prime is 525112387. The next prime is 525112403. The reversal of 525112391 is 193211525.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 525112391 - 2² = 525112387 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (525112591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262556195 + 262556196.

It is an arithmetic number, because the mean of its divisors is an integer number (262556196).

Almost surely, 2^525112391 is an apocalyptic number.

525112391 is a deficient number, since it is larger than the sum of its proper divisors (1).

525112391 is an equidigital number, since it uses as much as digits as its factorization.

525112391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2700, while the sum is 29.

The square root of 525112391 is about 22915.3309162229. The cubic root of 525112391 is about 806.7718855267.

The spelling of 525112391 in words is "five hundred twenty-five million, one hundred twelve thousand, three hundred ninety-one".