523671506 has 4 divisors (see below), whose sum is σ = 785507262. Its totient is φ = 261835752.

The previous prime is 523671479. The next prime is 523671517. The reversal of 523671506 is 605176325.

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

It can be written as a sum of positive squares in only one way, i.e., 336392281 + 187279225 = 18341^2 + 13685^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130917875 + ... + 130917878.

Almost surely, 2^523671506 is an apocalyptic number.

523671506 is a deficient number, since it is larger than the sum of its proper divisors (261835756).

523671506 is a wasteful number, since it uses less digits than its factorization.

523671506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261835755.

The product of its (nonzero) digits is 37800, while the sum is 35.

The square root of 523671506 is about 22883.8699961348. The cubic root of 523671506 is about 806.0332941933.

The spelling of 523671506 in words is "five hundred twenty-three million, six hundred seventy-one thousand, five hundred six".