2020440251 has 2 divisors, whose sum is σ = 2020440252. Its totient is φ = 2020440250.

The previous prime is 2020440239. The next prime is 2020440263. The reversal of 2020440251 is 1520440202.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (2020440239) and next prime (2020440263).

It is a cyclic number.

It is not a de Polignac number, because 2020440251 - 2⁶ = 2020440187 is a prime.

It is a super-3 number, since 3×2020440251³ (a number of 29 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (2020448251) 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 as a sum of consecutive naturals, namely, 1010220125 + 1010220126.

It is an arithmetic number, because the mean of its divisors is an integer number (1010220126).

Almost surely, 2^2020440251 is an apocalyptic number.

2020440251 is a deficient number, since it is larger than the sum of its proper divisors (1).

2020440251 is an equidigital number, since it uses as much as digits as its factorization.

2020440251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 2020440251 is about 44949.3075697502. The cubic root of 2020440251 is about 1264.1986938873.

Adding to 2020440251 its reverse (1520440202), we get a palindrome (3540880453).

The spelling of 2020440251 in words is "two billion, twenty million, four hundred forty thousand, two hundred fifty-one".