3521054021 has 16 divisors (see below), whose sum is σ = 3645796608. Its totient is φ = 3398664000.

The previous prime is 3521053961. The next prime is 3521054023. The reversal of 3521054021 is 1204501253.

3521054021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3521054021 - 2¹⁸ = 3520791877 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 (3521054023) 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, 1342091 + ... + 1344711.

It is an arithmetic number, because the mean of its divisors is an integer number (227862288).

Almost surely, 2^3521054021 is an apocalyptic number.

It is an amenable number.

3521054021 is a deficient number, since it is larger than the sum of its proper divisors (124742587).

3521054021 is a wasteful number, since it uses less digits than its factorization.

3521054021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3052.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 3521054021 is about 59338.4699920718. The cubic root of 3521054021 is about 1521.3328021733.

Adding to 3521054021 its reverse (1204501253), we get a palindrome (4725555274).

The spelling of 3521054021 in words is "three billion, five hundred twenty-one million, fifty-four thousand, twenty-one".