5245422021 has 72 divisors (see below), whose sum is σ = 9223066944. Its totient is φ = 2858929920.

The previous prime is 5245421999. The next prime is 5245422023. The reversal of 5245422021 is 1202245425.

5245422021 is a `hidden beast` number, since 5 + 2 + 454 + 2 + 202 + 1 = 666.

It is not a de Polignac number, because 5245422021 - 2¹⁰ = 5245420997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5245422023) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 5953501 + ... + 5954381.

It is an arithmetic number, because the mean of its divisors is an integer number (128098152).

Almost surely, 2^5245422021 is an apocalyptic number.

It is an amenable number.

5245422021 is a deficient number, since it is larger than the sum of its proper divisors (3977644923).

5245422021 is a wasteful number, since it uses less digits than its factorization.

5245422021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1511 (or 1501 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 5245422021 is about 72425.2857847313. The cubic root of 5245422021 is about 1737.5079953120.

Adding to 5245422021 its reverse (1202245425), we get a palindrome (6447667446).

The spelling of 5245422021 in words is "five billion, two hundred forty-five million, four hundred twenty-two thousand, twenty-one".