5621023481 has 2 divisors, whose sum is σ = 5621023482. Its totient is φ = 5621023480.

The previous prime is 5621023477. The next prime is 5621023487. The reversal of 5621023481 is 1843201265.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5451607225 + 169416256 = 73835^2 + 13016^2 .

It is a cyclic number.

It is not a de Polignac number, because 5621023481 - 2² = 5621023477 is a prime.

It is a super-2 number, since 2×5621023481² = 63191809947906714722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5621023487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2810511740 + 2810511741.

It is an arithmetic number, because the mean of its divisors is an integer number (2810511741).

Almost surely, 2^5621023481 is an apocalyptic number.

It is an amenable number.

5621023481 is a deficient number, since it is larger than the sum of its proper divisors (1).

5621023481 is an equidigital number, since it uses as much as digits as its factorization.

5621023481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 5621023481 is about 74973.4851864311. The cubic root of 5621023481 is about 1778.0274703754.

The spelling of 5621023481 in words is "five billion, six hundred twenty-one million, twenty-three thousand, four hundred eighty-one".