256340550 has 48 divisors (see below), whose sum is σ = 656243712. Its totient is φ = 66151200.

The previous prime is 256340531. The next prime is 256340561. The reversal of 256340550 is 55043652.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22914 + ... + 32213.

It is an arithmetic number, because the mean of its divisors is an integer number (13671744).

Almost surely, 2^256340550 is an apocalyptic number.

256340550 is an abundant number, since it is smaller than the sum of its proper divisors (399903162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256340550 is a wasteful number, since it uses less digits than its factorization.

256340550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55173 (or 55168 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 30.

The square root of 256340550 is about 16010.6386505973. The cubic root of 256340550 is about 635.2418530241.

The spelling of 256340550 in words is "two hundred fifty-six million, three hundred forty thousand, five hundred fifty".