523126819 has 2 divisors, whose sum is σ = 523126820. Its totient is φ = 523126818.

The previous prime is 523126787. The next prime is 523126823. The reversal of 523126819 is 918621325.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 523126819 - 2⁵ = 523126787 is a prime.

It is a super-2 number, since 2×523126819² = 547323337514117522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (523126889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261563409 + 261563410.

It is an arithmetic number, because the mean of its divisors is an integer number (261563410).

Almost surely, 2^523126819 is an apocalyptic number.

523126819 is a deficient number, since it is larger than the sum of its proper divisors (1).

523126819 is an equidigital number, since it uses as much as digits as its factorization.

523126819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 37.

The square root of 523126819 is about 22871.9657878373. The cubic root of 523126819 is about 805.7537371566.

The spelling of 523126819 in words is "five hundred twenty-three million, one hundred twenty-six thousand, eight hundred nineteen".