284540453 has 2 divisors, whose sum is σ = 284540454. Its totient is φ = 284540452.

The previous prime is 284540401. The next prime is 284540483. The reversal of 284540453 is 354045482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 143952004 + 140588449 = 11998^2 + 11857^2 .

It is a cyclic number.

It is not a de Polignac number, because 284540453 - 2¹⁶ = 284474917 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (284540483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142270226 + 142270227.

It is an arithmetic number, because the mean of its divisors is an integer number (142270227).

Almost surely, 2^284540453 is an apocalyptic number.

284540453 is the 9017-th centered heptagonal number.

It is an amenable number.

284540453 is a deficient number, since it is larger than the sum of its proper divisors (1).

284540453 is an equidigital number, since it uses as much as digits as its factorization.

284540453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 76800, while the sum is 35.

The square root of 284540453 is about 16868.3269176288. The cubic root of 284540453 is about 657.7305377873.

The spelling of 284540453 in words is "two hundred eighty-four million, five hundred forty thousand, four hundred fifty-three".