525349439 has 2 divisors, whose sum is σ = 525349440. Its totient is φ = 525349438.

The previous prime is 525349403. The next prime is 525349469. The reversal of 525349439 is 934943525.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 525349439 - 2¹² = 525345343 is a prime.

It is a super-2 number, since 2×525349439² = 551984066115229442, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 525349439.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (525349469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262674719 + 262674720.

It is an arithmetic number, because the mean of its divisors is an integer number (262674720).

Almost surely, 2^525349439 is an apocalyptic number.

525349439 is a deficient number, since it is larger than the sum of its proper divisors (1).

525349439 is an equidigital number, since it uses as much as digits as its factorization.

525349439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 583200, while the sum is 44.

The square root of 525349439 is about 22920.5025904756. The cubic root of 525349439 is about 806.8932658224.

The spelling of 525349439 in words is "five hundred twenty-five million, three hundred forty-nine thousand, four hundred thirty-nine".