2572120540 has 48 divisors (see below), whose sum is σ = 5950887264. Its totient is φ = 926048000.

The previous prime is 2572120513. The next prime is 2572120549. The reversal of 2572120540 is 450212752.

It is a junction number, because it is equal to n+sod(n) for n = 2572120499 and 2572120508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2572120549) 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, 35659 + ... + 80098.

It is an arithmetic number, because the mean of its divisors is an integer number (123976818).

Almost surely, 2^2572120540 is an apocalyptic number.

2572120540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2572120540 is an abundant number, since it is smaller than the sum of its proper divisors (3378766724).

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

2572120540 is a wasteful number, since it uses less digits than its factorization.

2572120540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115878 (or 115876 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 2572120540 is about 50716.0777268905. The cubic root of 2572120540 is about 1370.1362998638.

The spelling of 2572120540 in words is "two billion, five hundred seventy-two million, one hundred twenty thousand, five hundred forty".