256246045 has 16 divisors (see below), whose sum is σ = 336063168. Its totient is φ = 186019840.

The previous prime is 256246037. The next prime is 256246051. The reversal of 256246045 is 540642652.

It is not a de Polignac number, because 256246045 - 2³ = 256246037 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 256246045.

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, 28317 + ... + 36253.

It is an arithmetic number, because the mean of its divisors is an integer number (21003948).

Almost surely, 2^256246045 is an apocalyptic number.

It is an amenable number.

256246045 is a deficient number, since it is larger than the sum of its proper divisors (79817123).

256246045 is a wasteful number, since it uses less digits than its factorization.

256246045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8540.

The product of its (nonzero) digits is 57600, while the sum is 34.

The square root of 256246045 is about 16007.6870596598. The cubic root of 256246045 is about 635.1637786157.

Adding to 256246045 its reverse (540642652), we get a palindrome (796888697).

The spelling of 256246045 in words is "two hundred fifty-six million, two hundred forty-six thousand, forty-five".