525553123 has 2 divisors, whose sum is σ = 525553124. Its totient is φ = 525553122.

The previous prime is 525553121. The next prime is 525553157. The reversal of 525553123 is 321355525.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 525553123 - 2¹ = 525553121 is a prime.

Together with 525553121, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (525553121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262776561 + 262776562.

It is an arithmetic number, because the mean of its divisors is an integer number (262776562).

Almost surely, 2^525553123 is an apocalyptic number.

525553123 is a deficient number, since it is larger than the sum of its proper divisors (1).

525553123 is an equidigital number, since it uses as much as digits as its factorization.

525553123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22500, while the sum is 31.

The square root of 525553123 is about 22924.9454306875. The cubic root of 525553123 is about 806.9975329381.

The spelling of 525553123 in words is "five hundred twenty-five million, five hundred fifty-three thousand, one hundred twenty-three".