3573501921 has 32 divisors (see below), whose sum is σ = 5931465600. Its totient is φ = 2107218240.

The previous prime is 3573501901. The next prime is 3573501929. The reversal of 3573501921 is 1291053753.

3573501921 is a `hidden beast` number, since 3 + 573 + 50 + 19 + 21 = 666.

It is not a de Polignac number, because 3573501921 - 2²⁷ = 3439284193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3573501929) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 151606 + ... + 173583.

It is an arithmetic number, because the mean of its divisors is an integer number (185358300).

Almost surely, 2^3573501921 is an apocalyptic number.

It is an amenable number.

3573501921 is a deficient number, since it is larger than the sum of its proper divisors (2357963679).

3573501921 is a wasteful number, since it uses less digits than its factorization.

3573501921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325246 (or 325240 counting only the distinct ones).

The product of its (nonzero) digits is 28350, while the sum is 36.

The square root of 3573501921 is about 59778.7748368934. The cubic root of 3573501921 is about 1528.8492808541.

The spelling of 3573501921 in words is "three billion, five hundred seventy-three million, five hundred one thousand, nine hundred twenty-one".