254521040 has 40 divisors (see below), whose sum is σ = 592917408. Its totient is φ = 101609600.

The previous prime is 254521031. The next prime is 254521049. The reversal of 254521040 is 40125452.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (254521031) and next prime (254521049).

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

It is a junction number, because it is equal to n+sod(n) for n = 254520997 and 254521015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (254521049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42215 + ... + 47865.

Almost surely, 2^254521040 is an apocalyptic number.

254521040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

254521040 is an abundant number, since it is smaller than the sum of its proper divisors (338396368).

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

254521040 is a wasteful number, since it uses less digits than its factorization.

254521040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6227 (or 6221 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 254521040 is about 15953.7155546913. The cubic root of 254521040 is about 633.7352966904.

Adding to 254521040 its reverse (40125452), we get a palindrome (294646492).

The spelling of 254521040 in words is "two hundred fifty-four million, five hundred twenty-one thousand, forty".