5021621757 has 16 divisors (see below), whose sum is σ = 7544223360. Its totient is φ = 3300595200.

The previous prime is 5021621713. The next prime is 5021621767. The reversal of 5021621757 is 7571261205.

5021621757 is a `hidden beast` number, since 5 + 0 + 21 + 621 + 7 + 5 + 7 = 666.

It is not a de Polignac number, because 5021621757 - 2¹¹ = 5021619709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5021621767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1307844 + ... + 1311677.

It is an arithmetic number, because the mean of its divisors is an integer number (471513960).

Almost surely, 2^5021621757 is an apocalyptic number.

It is an amenable number.

5021621757 is a deficient number, since it is larger than the sum of its proper divisors (2522601603).

5021621757 is a wasteful number, since it uses less digits than its factorization.

5021621757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2619601 (or 2619595 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 36.

The square root of 5021621757 is about 70863.4020986856. The cubic root of 5021621757 is about 1712.4372478613.

The spelling of 5021621757 in words is "five billion, twenty-one million, six hundred twenty-one thousand, seven hundred fifty-seven".