845550253 has 2 divisors, whose sum is σ = 845550254. Its totient is φ = 845550252.

The previous prime is 845550119. The next prime is 845550259. The reversal of 845550253 is 352055548.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 543729124 + 301821129 = 23318^2 + 17373^2 .

It is a cyclic number.

It is not a de Polignac number, because 845550253 - 2¹⁷ = 845419181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (845550259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 422775126 + 422775127.

It is an arithmetic number, because the mean of its divisors is an integer number (422775127).

Almost surely, 2^845550253 is an apocalyptic number.

It is an amenable number.

845550253 is a deficient number, since it is larger than the sum of its proper divisors (1).

845550253 is an equidigital number, since it uses as much as digits as its factorization.

845550253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120000, while the sum is 37.

The square root of 845550253 is about 29078.3468065157. The cubic root of 845550253 is about 945.6123623565.

The spelling of 845550253 in words is "eight hundred forty-five million, five hundred fifty thousand, two hundred fifty-three".