254035021 has 2 divisors, whose sum is σ = 254035022. Its totient is φ = 254035020.

The previous prime is 254035009. The next prime is 254035027. The reversal of 254035021 is 120530452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 220522500 + 33512521 = 14850^2 + 5789^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-254035021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 254034983 and 254035001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (254035027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127017510 + 127017511.

It is an arithmetic number, because the mean of its divisors is an integer number (127017511).

Almost surely, 2^254035021 is an apocalyptic number.

It is an amenable number.

254035021 is a deficient number, since it is larger than the sum of its proper divisors (1).

254035021 is an equidigital number, since it uses as much as digits as its factorization.

254035021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 254035021 is about 15938.4761191276. The cubic root of 254035021 is about 633.3316579519.

Adding to 254035021 its reverse (120530452), we get a palindrome (374565473).

The spelling of 254035021 in words is "two hundred fifty-four million, thirty-five thousand, twenty-one".