521423524454 has 32 divisors (see below), whose sum is σ = 914803061760. Its totient is φ = 218294188992.

The previous prime is 521423524451. The next prime is 521423524463. The reversal of 521423524454 is 454425324125.

It is a super-2 number, since 2×521423524454² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521423524451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2417534 + ... + 2624369.

It is an arithmetic number, because the mean of its divisors is an integer number (28587595680).

Almost surely, 2^521423524454 is an apocalyptic number.

521423524454 is a deficient number, since it is larger than the sum of its proper divisors (393379537306).

521423524454 is a wasteful number, since it uses less digits than its factorization.

521423524454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5042084.

The product of its digits is 768000, while the sum is 41.

Adding to 521423524454 its reverse (454425324125), we get a palindrome (975848848579).

The spelling of 521423524454 in words is "five hundred twenty-one billion, four hundred twenty-three million, five hundred twenty-four thousand, four hundred fifty-four".