4657552821 has 24 divisors (see below), whose sum is σ = 7085642720. Its totient is φ = 2939957856.

The previous prime is 4657552819. The next prime is 4657552847. The reversal of 4657552821 is 1282557564.

4657552821 is a `hidden beast` number, since 4 + 6 + 575 + 52 + 8 + 21 = 666.

It is not a de Polignac number, because 4657552821 - 2¹ = 4657552819 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4657552321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 344430 + ... + 357696.

Almost surely, 2^4657552821 is an apocalyptic number.

It is an amenable number.

4657552821 is a deficient number, since it is larger than the sum of its proper divisors (2428089899).

4657552821 is a wasteful number, since it uses less digits than its factorization.

4657552821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15345 (or 15342 counting only the distinct ones).

The product of its digits is 672000, while the sum is 45.

The square root of 4657552821 is about 68246.2659857666. The cubic root of 4657552821 is about 1670.0107354659.

The spelling of 4657552821 in words is "four billion, six hundred fifty-seven million, five hundred fifty-two thousand, eight hundred twenty-one".