754921 has 2 divisors, whose sum is σ = 754922. Its totient is φ = 754920.

The previous prime is 754907. The next prime is 754931. The reversal of 754921 is 129457.

It is a happy number.

754921 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., 640000 + 114921 = 800^2 + 339^2 .

It is an emirp because it is prime and its reverse (129457) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 754921 - 2¹⁵ = 722153 is a prime.

754921 is a lucky number.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 754921.

It is not a weakly prime, because it can be changed into another prime (754931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 377460 + 377461.

It is an arithmetic number, because the mean of its divisors is an integer number (377461).

2⁷⁵⁴⁹²¹ is an apocalyptic number.

It is an amenable number.

754921 is a deficient number, since it is larger than the sum of its proper divisors (1).

754921 is an equidigital number, since it uses as much as digits as its factorization.

754921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2520, while the sum is 28.

The square root of 754921 is about 868.8618992682. The cubic root of 754921 is about 91.0543088451.

The spelling of 754921 in words is "seven hundred fifty-four thousand, nine hundred twenty-one".