5021421553 has 4 divisors (see below), whose sum is σ = 5023598580. Its totient is φ = 5019244528.

The previous prime is 5021421541. The next prime is 5021421569. The reversal of 5021421553 is 3551241205.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1592967744 + 3428453809 = 39912^2 + 58553^2 .

It is a cyclic number.

It is not a de Polignac number, because 5021421553 - 2¹³ = 5021413361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5021421533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1085050 + ... + 1089667.

It is an arithmetic number, because the mean of its divisors is an integer number (1255899645).

Almost surely, 2^5021421553 is an apocalyptic number.

It is an amenable number.

5021421553 is a deficient number, since it is larger than the sum of its proper divisors (2177027).

5021421553 is a wasteful number, since it uses less digits than its factorization.

5021421553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2177026.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 5021421553 is about 70861.9894795510. The cubic root of 5021421553 is about 1712.4144901840.

Adding to 5021421553 its reverse (3551241205), we get a palindrome (8572662758).

The spelling of 5021421553 in words is "five billion, twenty-one million, four hundred twenty-one thousand, five hundred fifty-three".