253426493 has 2 divisors, whose sum is σ = 253426494. Its totient is φ = 253426492.

The previous prime is 253426421. The next prime is 253426517. The reversal of 253426493 is 394624352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 252110884 + 1315609 = 15878^2 + 1147^2 .

It is a cyclic number.

It is not a de Polignac number, because 253426493 - 2¹⁶ = 253360957 is a prime.

It is equal to p_13856465 and since 253426493 and 13856465 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253426793) 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, 126713246 + 126713247.

It is an arithmetic number, because the mean of its divisors is an integer number (126713247).

Almost surely, 2^253426493 is an apocalyptic number.

It is an amenable number.

253426493 is a deficient number, since it is larger than the sum of its proper divisors (1).

253426493 is an equidigital number, since it uses as much as digits as its factorization.

253426493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 38.

The square root of 253426493 is about 15919.3747678733. The cubic root of 253426493 is about 632.8255490025.

The spelling of 253426493 in words is "two hundred fifty-three million, four hundred twenty-six thousand, four hundred ninety-three".