2540514540 has 48 divisors (see below), whose sum is σ = 7122820320. Its totient is φ = 676577280.

The previous prime is 2540514503. The next prime is 2540514551. The reversal of 2540514540 is 454150452.

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 = 2540514498 and 2540514507.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18610 + ... + 73670.

It is an arithmetic number, because the mean of its divisors is an integer number (148392090).

Almost surely, 2^2540514540 is an apocalyptic number.

2540514540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2540514540 is an abundant number, since it is smaller than the sum of its proper divisors (4582305780).

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

2540514540 is a wasteful number, since it uses less digits than its factorization.

2540514540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55842 (or 55840 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 30.

The square root of 2540514540 is about 50403.5171391838. The cubic root of 2540514540 is about 1364.5011151696.

Adding to 2540514540 its reverse (454150452), we get a palindrome (2994664992).

The spelling of 2540514540 in words is "two billion, five hundred forty million, five hundred fourteen thousand, five hundred forty".