525038321 has 2 divisors, whose sum is σ = 525038322. Its totient is φ = 525038320.

The previous prime is 525038309. The next prime is 525038429. The reversal of 525038321 is 123830525.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 503508721 + 21529600 = 22439^2 + 4640^2 .

It is a cyclic number.

It is not a de Polignac number, because 525038321 - 2⁶ = 525038257 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (525038221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262519160 + 262519161.

It is an arithmetic number, because the mean of its divisors is an integer number (262519161).

Almost surely, 2^525038321 is an apocalyptic number.

It is an amenable number.

525038321 is a deficient number, since it is larger than the sum of its proper divisors (1).

525038321 is an equidigital number, since it uses as much as digits as its factorization.

525038321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 525038321 is about 22913.7146922973. The cubic root of 525038321 is about 806.7339505345.

Adding to 525038321 its reverse (123830525), we get a palindrome (648868846).

The spelling of 525038321 in words is "five hundred twenty-five million, thirty-eight thousand, three hundred twenty-one".