523491377 has 4 divisors (see below), whose sum is σ = 524306160. Its totient is φ = 522676596.

The previous prime is 523491361. The next prime is 523491391. The reversal of 523491377 is 773194325.

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.

It is a cyclic number.

It is not a de Polignac number, because 523491377 - 2⁴ = 523491361 is a prime.

It is a super-2 number, since 2×523491377² = 548086443586712258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (523491337) 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, 406427 + ... + 407712.

It is an arithmetic number, because the mean of its divisors is an integer number (131076540).

Almost surely, 2^523491377 is an apocalyptic number.

It is an amenable number.

523491377 is a deficient number, since it is larger than the sum of its proper divisors (814783).

523491377 is an equidigital number, since it uses as much as digits as its factorization.

523491377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814782.

The product of its digits is 158760, while the sum is 41.

The square root of 523491377 is about 22879.9339378417. The cubic root of 523491377 is about 805.9408656257.

The spelling of 523491377 in words is "five hundred twenty-three million, four hundred ninety-one thousand, three hundred seventy-seven".