525504401 has 2 divisors, whose sum is σ = 525504402. Its totient is φ = 525504400.

The previous prime is 525504367. The next prime is 525504431. The reversal of 525504401 is 104405525.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 337677376 + 187827025 = 18376^2 + 13705^2 .

It is a cyclic number.

It is not a de Polignac number, because 525504401 - 2¹⁸ = 525242257 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (525504431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262752200 + 262752201.

It is an arithmetic number, because the mean of its divisors is an integer number (262752201).

Almost surely, 2^525504401 is an apocalyptic number.

It is an amenable number.

525504401 is a deficient number, since it is larger than the sum of its proper divisors (1).

525504401 is an equidigital number, since it uses as much as digits as its factorization.

525504401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 525504401 is about 22923.8827644882. The cubic root of 525504401 is about 806.9725942927.

Adding to 525504401 its reverse (104405525), we get a palindrome (629909926).

The spelling of 525504401 in words is "five hundred twenty-five million, five hundred four thousand, four hundred one".