525531311 has 2 divisors, whose sum is σ = 525531312. Its totient is φ = 525531310.

The previous prime is 525531271. The next prime is 525531323. The reversal of 525531311 is 113135525.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 525531311 - 2²² = 521337007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (525531341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262765655 + 262765656.

It is an arithmetic number, because the mean of its divisors is an integer number (262765656).

Almost surely, 2^525531311 is an apocalyptic number.

525531311 is a deficient number, since it is larger than the sum of its proper divisors (1).

525531311 is an equidigital number, since it uses as much as digits as its factorization.

525531311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2250, while the sum is 26.

The square root of 525531311 is about 22924.4696994282. The cubic root of 525531311 is about 806.9863685268.

Adding to 525531311 its reverse (113135525), we get a palindrome (638666836).

The spelling of 525531311 in words is "five hundred twenty-five million, five hundred thirty-one thousand, three hundred eleven".