255420445 has 16 divisors (see below), whose sum is σ = 350558208. Its totient is φ = 175011840.

The previous prime is 255420443. The next prime is 255420467. The reversal of 255420445 is 544024552.

It is not a de Polignac number, because 255420445 - 2¹ = 255420443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255420443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72157 + ... + 75613.

It is an arithmetic number, because the mean of its divisors is an integer number (21909888).

Almost surely, 2^255420445 is an apocalyptic number.

It is an amenable number.

255420445 is a deficient number, since it is larger than the sum of its proper divisors (95137763).

255420445 is a wasteful number, since it uses less digits than its factorization.

255420445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5580.

The product of its (nonzero) digits is 32000, while the sum is 31.

The square root of 255420445 is about 15981.8786442646. The cubic root of 255420445 is about 634.4808992564.

Adding to 255420445 its reverse (544024552), we get a palindrome (799444997).

The spelling of 255420445 in words is "two hundred fifty-five million, four hundred twenty thousand, four hundred forty-five".