2421164523 has 16 divisors (see below), whose sum is σ = 3349663520. Its totient is φ = 1554287616.

The previous prime is 2421164507. The next prime is 2421164567. The reversal of 2421164523 is 3254611242.

It is not a de Polignac number, because 2421164523 - 2⁴ = 2421164507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2421164503) 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, 101668 + ... + 123201.

It is an arithmetic number, because the mean of its divisors is an integer number (209353970).

Almost surely, 2^2421164523 is an apocalyptic number.

2421164523 is a deficient number, since it is larger than the sum of its proper divisors (928498997).

2421164523 is a wasteful number, since it uses less digits than its factorization.

2421164523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225006.

The product of its digits is 11520, while the sum is 30.

The square root of 2421164523 is about 49205.3302295595. The cubic root of 2421164523 is about 1342.7900068772.

Adding to 2421164523 its reverse (3254611242), we get a palindrome (5675775765).

The spelling of 2421164523 in words is "two billion, four hundred twenty-one million, one hundred sixty-four thousand, five hundred twenty-three".