255074478 has 16 divisors (see below), whose sum is σ = 519775056. Its totient is φ = 83420480.

The previous prime is 255074473. The next prime is 255074507. The reversal of 255074478 is 874470552.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255074473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 400743 + ... + 401378.

It is an arithmetic number, because the mean of its divisors is an integer number (32485941).

Almost surely, 2^255074478 is an apocalyptic number.

255074478 is an abundant number, since it is smaller than the sum of its proper divisors (264700578).

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

255074478 is a wasteful number, since it uses less digits than its factorization.

255074478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802179.

The product of its (nonzero) digits is 313600, while the sum is 42.

The square root of 255074478 is about 15971.0512490568. The cubic root of 255074478 is about 634.1943016866.

It can be divided in two parts, 255074 and 478, that added together give a palindrome (255552).

The spelling of 255074478 in words is "two hundred fifty-five million, seventy-four thousand, four hundred seventy-eight".