523450144487 has 4 divisors (see below), whose sum is σ = 527571799296. Its totient is φ = 519328489680.

The previous prime is 523450144463. The next prime is 523450144519. The reversal of 523450144487 is 784441054325.

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 523450144487 - 2⁶ = 523450144423 is a prime.

It is a super-2 number, since 2×523450144487² (a number of 24 digits) 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 (523450144417) 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, 2060827214 + ... + 2060827467.

It is an arithmetic number, because the mean of its divisors is an integer number (131892949824).

Almost surely, 2^523450144487 is an apocalyptic number.

523450144487 is a deficient number, since it is larger than the sum of its proper divisors (4121654809).

523450144487 is a wasteful number, since it uses less digits than its factorization.

523450144487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4121654808.

The product of its (nonzero) digits is 2150400, while the sum is 47.

The spelling of 523450144487 in words is "five hundred twenty-three billion, four hundred fifty million, one hundred forty-four thousand, four hundred eighty-seven".