3516224021 has 4 divisors (see below), whose sum is σ = 3516828000. Its totient is φ = 3515620044.

The previous prime is 3516224017. The next prime is 3516224027. The reversal of 3516224021 is 1204226153.

It is a happy number.

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 3516224021 - 2² = 3516224017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3516224027) 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, 293171 + ... + 304928.

It is an arithmetic number, because the mean of its divisors is an integer number (879207000).

Almost surely, 2^3516224021 is an apocalyptic number.

It is an amenable number.

3516224021 is a deficient number, since it is larger than the sum of its proper divisors (603979).

3516224021 is an equidigital number, since it uses as much as digits as its factorization.

3516224021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603978.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 3516224021 is about 59297.7573016046. The cubic root of 3516224021 is about 1520.6368552741.

The spelling of 3516224021 in words is "three billion, five hundred sixteen million, two hundred twenty-four thousand, twenty-one".