3521401000 has 128 divisors (see below), whose sum is σ = 9115011360. Its totient is φ = 1264896000.

The previous prime is 3521400973. The next prime is 3521401019. The reversal of 3521401000 is 1041253.

It can be written as a sum of positive squares in 16 ways, for example, as 1009587076 + 2511813924 = 31774^2 + 50118^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 477340 + ... + 484660.

Almost surely, 2^3521401000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3521401000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4557505680).

3521401000 is an abundant number, since it is smaller than the sum of its proper divisors (5593610360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3521401000 is a wasteful number, since it uses less digits than its factorization.

3521401000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7392 (or 7378 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 3521401000 is about 59341.3936472678. The cubic root of 3521401000 is about 1521.3827733081.

Adding to 3521401000 its reverse (1041253), we get a palindrome (3522442253).

The spelling of 3521401000 in words is "three billion, five hundred twenty-one million, four hundred one thousand".