3540221524 has 24 divisors (see below), whose sum is σ = 7127971200. Its totient is φ = 1507053216.

The previous prime is 3540221497. The next prime is 3540221533. The reversal of 3540221524 is 4251220453.

3540221524 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 3540221492 and 3540221501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 420112 + ... + 428455.

It is an arithmetic number, because the mean of its divisors is an integer number (296998800).

Almost surely, 2^3540221524 is an apocalyptic number.

It is an amenable number.

3540221524 is an abundant number, since it is smaller than the sum of its proper divisors (3587749676).

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

3540221524 is a wasteful number, since it uses less digits than its factorization.

3540221524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848727 (or 848725 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 3540221524 is about 59499.7607054012. The cubic root of 3540221524 is about 1524.0883594055.

Adding to 3540221524 its reverse (4251220453), we get a palindrome (7791441977).

The spelling of 3540221524 in words is "three billion, five hundred forty million, two hundred twenty-one thousand, five hundred twenty-four".