254554640 has 40 divisors (see below), whose sum is σ = 610937088. Its totient is φ = 98536320.

The previous prime is 254554637. The next prime is 254554649. The reversal of 254554640 is 46455452.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 254554640.

It is not an unprimeable number, because it can be changed into a prime (254554649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48842 + ... + 53801.

Almost surely, 2^254554640 is an apocalyptic number.

254554640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

254554640 is an abundant number, since it is smaller than the sum of its proper divisors (356382448).

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

254554640 is a wasteful number, since it uses less digits than its factorization.

254554640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102687 (or 102681 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 35.

The square root of 254554640 is about 15954.7685661685. The cubic root of 254554640 is about 633.7631824912.

The spelling of 254554640 in words is "two hundred fifty-four million, five hundred fifty-four thousand, six hundred forty".