626050021 has 2 divisors, whose sum is σ = 626050022. Its totient is φ = 626050020.

The previous prime is 626050001. The next prime is 626050039. The reversal of 626050021 is 120050626.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 420701121 + 205348900 = 20511^2 + 14330^2 .

It is a cyclic number.

It is not a de Polignac number, because 626050021 - 2⁵ = 626049989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 626049974 and 626050001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (626050001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313025010 + 313025011.

It is an arithmetic number, because the mean of its divisors is an integer number (313025011).

Almost surely, 2^626050021 is an apocalyptic number.

It is an amenable number.

626050021 is a deficient number, since it is larger than the sum of its proper divisors (1).

626050021 is an equidigital number, since it uses as much as digits as its factorization.

626050021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 626050021 is about 25020.9916070487. The cubic root of 626050021 is about 855.4665082943.

The spelling of 626050021 in words is "six hundred twenty-six million, fifty thousand, twenty-one".