255432540 has 96 divisors (see below), whose sum is σ = 787739904. Its totient is φ = 61327360.

The previous prime is 255432539. The next prime is 255432547. The reversal of 255432540 is 45234552.

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

It is a junction number, because it is equal to n+sod(n) for n = 255432498 and 255432507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255432547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68812 + ... + 72428.

It is an arithmetic number, because the mean of its divisors is an integer number (8205624).

Almost surely, 2^255432540 is an apocalyptic number.

255432540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255432540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (393869952).

255432540 is an abundant number, since it is smaller than the sum of its proper divisors (532307364).

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

255432540 is a wasteful number, since it uses less digits than its factorization.

255432540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3747 (or 3745 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 30.

The square root of 255432540 is about 15982.2570371021. The cubic root of 255432540 is about 634.4909140190.

The spelling of 255432540 in words is "two hundred fifty-five million, four hundred thirty-two thousand, five hundred forty".