755474921 has 2 divisors, whose sum is σ = 755474922. Its totient is φ = 755474920.

The previous prime is 755474831. The next prime is 755474927. The reversal of 755474921 is 129474557.

755474921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 587383696 + 168091225 = 24236^2 + 12965^2 .

It is an emirp because it is prime and its reverse (129474557) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-755474921 is a prime.

It is not a weakly prime, because it can be changed into another prime (755474927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 377737460 + 377737461.

It is an arithmetic number, because the mean of its divisors is an integer number (377737461).

Almost surely, 2^755474921 is an apocalyptic number.

It is an amenable number.

755474921 is a deficient number, since it is larger than the sum of its proper divisors (1).

755474921 is an equidigital number, since it uses as much as digits as its factorization.

755474921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 352800, while the sum is 44.

The square root of 755474921 is about 27485.9040418903. The cubic root of 755474921 is about 910.7657367500.

The spelling of 755474921 in words is "seven hundred fifty-five million, four hundred seventy-four thousand, nine hundred twenty-one".