4057252561 has 8 divisors (see below), whose sum is σ = 4087868904. Its totient is φ = 4026696960.

The previous prime is 4057252553. The next prime is 4057252579. The reversal of 4057252561 is 1652527504.

4057252561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 306425025 + 3750827536 = 17505^2 + 61244^2 .

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 4057252561 - 2³ = 4057252553 is a prime.

It is a super-2 number, since 2×4057252561² = 32922596687482117442, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4057252561.

It is not an unprimeable number, because it can be changed into a prime (4057252541) 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, 123651 + ... + 152983.

It is an arithmetic number, because the mean of its divisors is an integer number (510983613).

Almost surely, 2^4057252561 is an apocalyptic number.

It is an amenable number.

4057252561 is a deficient number, since it is larger than the sum of its proper divisors (30616343).

4057252561 is a wasteful number, since it uses less digits than its factorization.

4057252561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30371.

The product of its (nonzero) digits is 84000, while the sum is 37.

The square root of 4057252561 is about 63696.5663203284. The cubic root of 4057252561 is about 1594.9387673810.

The spelling of 4057252561 in words is "four billion, fifty-seven million, two hundred fifty-two thousand, five hundred sixty-one".