523144997 has 4 divisors (see below), whose sum is σ = 523194336. Its totient is φ = 523095660.

The previous prime is 523144981. The next prime is 523145003. The reversal of 523144997 is 799441325.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 523144997 - 2⁴ = 523144981 is a prime.

It is a super-2 number, since 2×523144997² = 547361375772260018, 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 (523144597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1529 + ... + 32382.

It is an arithmetic number, because the mean of its divisors is an integer number (130798584).

Almost surely, 2^523144997 is an apocalyptic number.

It is an amenable number.

523144997 is a deficient number, since it is larger than the sum of its proper divisors (49339).

523144997 is a wasteful number, since it uses less digits than its factorization.

523144997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49338.

The product of its digits is 272160, while the sum is 44.

The square root of 523144997 is about 22872.3631704291. The cubic root of 523144997 is about 805.7630700253.

The spelling of 523144997 in words is "five hundred twenty-three million, one hundred forty-four thousand, nine hundred ninety-seven".