254131540 has 48 divisors (see below), whose sum is σ = 590283792. Its totient is φ = 91293696.

The previous prime is 254131511. The next prime is 254131541. The reversal of 254131540 is 45131452.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 12702096 + 241429444 = 3564^2 + 15538^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (254131541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3589 + ... + 22828.

It is an arithmetic number, because the mean of its divisors is an integer number (12297579).

Almost surely, 2^254131540 is an apocalyptic number.

254131540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

254131540 is an abundant number, since it is smaller than the sum of its proper divisors (336152252).

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

254131540 is a wasteful number, since it uses less digits than its factorization.

254131540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26476 (or 26474 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 254131540 is about 15941.5036931903. The cubic root of 254131540 is about 633.4118579152.

Adding to 254131540 its reverse (45131452), we get a palindrome (299262992).

The spelling of 254131540 in words is "two hundred fifty-four million, one hundred thirty-one thousand, five hundred forty".