255445645 has 16 divisors (see below), whose sum is σ = 377274240. Its totient is φ = 161688384.

The previous prime is 255445639. The next prime is 255445657. The reversal of 255445645 is 546544552.

It is a happy number.

It is not a de Polignac number, because 255445645 - 2¹⁹ = 254921357 is a prime.

It is a super-3 number, since 3×255445645³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 255445598 and 255445607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 280255 + ... + 281164.

It is an arithmetic number, because the mean of its divisors is an integer number (23579640).

Almost surely, 2^255445645 is an apocalyptic number.

It is an amenable number.

255445645 is a deficient number, since it is larger than the sum of its proper divisors (121828595).

255445645 is a wasteful number, since it uses less digits than its factorization.

255445645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561444.

The product of its digits is 480000, while the sum is 40.

The square root of 255445645 is about 15982.6670177414. The cubic root of 255445645 is about 634.5017647133.

The spelling of 255445645 in words is "two hundred fifty-five million, four hundred forty-five thousand, six hundred forty-five".