523651967 has 4 divisors (see below), whose sum is σ = 531467736. Its totient is φ = 515836200.

The previous prime is 523651939. The next prime is 523651987. The reversal of 523651967 is 769156325.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 523651967 - 2¹⁴ = 523635583 is a prime.

It is a super-2 number, since 2×523651967² = 548422765085938178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523651937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3907784 + ... + 3907917.

It is an arithmetic number, because the mean of its divisors is an integer number (132866934).

Almost surely, 2^523651967 is an apocalyptic number.

523651967 is a deficient number, since it is larger than the sum of its proper divisors (7815769).

523651967 is an equidigital number, since it uses as much as digits as its factorization.

523651967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7815768.

The product of its digits is 340200, while the sum is 44.

The square root of 523651967 is about 22883.4430757262. The cubic root of 523651967 is about 806.0232692825.

The spelling of 523651967 in words is "five hundred twenty-three million, six hundred fifty-one thousand, nine hundred sixty-seven".