253021019 has 2 divisors, whose sum is σ = 253021020. Its totient is φ = 253021018.

The previous prime is 253020997. The next prime is 253021031. The reversal of 253021019 is 910120352.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 253021019 - 2¹² = 253016923 is a prime.

It is a super-2 number, since 2×253021019² = 128039272111596722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 253020985 and 253021003.

It is not a weakly prime, because it can be changed into another prime (253021049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126510509 + 126510510.

It is an arithmetic number, because the mean of its divisors is an integer number (126510510).

Almost surely, 2^253021019 is an apocalyptic number.

253021019 is a deficient number, since it is larger than the sum of its proper divisors (1).

253021019 is an equidigital number, since it uses as much as digits as its factorization.

253021019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 253021019 is about 15906.6344334683. The cubic root of 253021019 is about 632.4878688691.

The spelling of 253021019 in words is "two hundred fifty-three million, twenty-one thousand, nineteen".