3722587521 has 8 divisors (see below), whose sum is σ = 5224684320. Its totient is φ = 2351107872.

The previous prime is 3722587507. The next prime is 3722587573. The reversal of 3722587521 is 1257852273.

3722587521 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3722587521 - 2⁵ = 3722587489 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3722587021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32654220 + ... + 32654333.

It is an arithmetic number, because the mean of its divisors is an integer number (653085540).

Almost surely, 2^3722587521 is an apocalyptic number.

It is an amenable number.

3722587521 is a deficient number, since it is larger than the sum of its proper divisors (1502096799).

3722587521 is a wasteful number, since it uses less digits than its factorization.

3722587521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65308575.

The product of its digits is 235200, while the sum is 42.

The square root of 3722587521 is about 61013.0110796050. The cubic root of 3722587521 is about 1549.8213489553.

The spelling of 3722587521 in words is "three billion, seven hundred twenty-two million, five hundred eighty-seven thousand, five hundred twenty-one".