253890029 has 2 divisors, whose sum is σ = 253890030. Its totient is φ = 253890028.

The previous prime is 253889959. The next prime is 253890037. The reversal of 253890029 is 920098352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 253541929 + 348100 = 15923^2 + 590^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253890029 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 253889974 and 253890001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253890079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126945014 + 126945015.

It is an arithmetic number, because the mean of its divisors is an integer number (126945015).

Almost surely, 2^253890029 is an apocalyptic number.

It is an amenable number.

253890029 is a deficient number, since it is larger than the sum of its proper divisors (1).

253890029 is an equidigital number, since it uses as much as digits as its factorization.

253890029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 253890029 is about 15933.9269798754. The cubic root of 253890029 is about 633.2111424164.

The spelling of 253890029 in words is "two hundred fifty-three million, eight hundred ninety thousand, twenty-nine".