3771252561 has 8 divisors (see below), whose sum is σ = 5042829024. Its totient is φ = 2506922240.

The previous prime is 3771252553. The next prime is 3771252619. The reversal of 3771252561 is 1652521773.

It is a happy number.

3771252561 is digitally balanced in base 2, because in such base 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 a cyclic number.

It is not a de Polignac number, because 3771252561 - 2³ = 3771252553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3771252161) 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, 1810320 + ... + 1812401.

It is an arithmetic number, because the mean of its divisors is an integer number (630353628).

Almost surely, 2^3771252561 is an apocalyptic number.

It is an amenable number.

3771252561 is a deficient number, since it is larger than the sum of its proper divisors (1271576463).

3771252561 is a wasteful number, since it uses less digits than its factorization.

3771252561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3623071.

The product of its digits is 88200, while the sum is 39.

The square root of 3771252561 is about 61410.5248389883. The cubic root of 3771252561 is about 1556.5456880326.

The spelling of 3771252561 in words is "three billion, seven hundred seventy-one million, two hundred fifty-two thousand, five hundred sixty-one".