755298421 has 2 divisors, whose sum is σ = 755298422. Its totient is φ = 755298420.

The previous prime is 755298419. The next prime is 755298461. The reversal of 755298421 is 124892557.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 754326225 + 972196 = 27465^2 + 986^2 .

It is a cyclic number.

It is not a de Polignac number, because 755298421 - 2¹ = 755298419 is a prime.

Together with 755298419, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (755298461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 377649210 + 377649211.

It is an arithmetic number, because the mean of its divisors is an integer number (377649211).

Almost surely, 2^755298421 is an apocalyptic number.

It is an amenable number.

755298421 is a deficient number, since it is larger than the sum of its proper divisors (1).

755298421 is an equidigital number, since it uses as much as digits as its factorization.

755298421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 201600, while the sum is 43.

The square root of 755298421 is about 27482.6931176695. The cubic root of 755298421 is about 910.6948044714.

The spelling of 755298421 in words is "seven hundred fifty-five million, two hundred ninety-eight thousand, four hundred twenty-one".