2501540 has 48 divisors (see below), whose sum is σ = 5745600. Its totient is φ = 911232.

The previous prime is 2501507. The next prime is 2501563. The reversal of 2501540 is 451052.

It is a congruent number.

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, 10907 + ... + 11133.

It is an arithmetic number, because the mean of its divisors is an integer number (119700).

2^2501540 is an apocalyptic number.

2501540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2501540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2872800).

2501540 is an abundant number, since it is smaller than the sum of its proper divisors (3244060).

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

2501540 is a wasteful number, since it uses less digits than its factorization.

2501540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284 (or 282 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 2501540 is about 1581.6257458704. The cubic root of 2501540 is about 135.7487431303.

Adding to 2501540 its reverse (451052), we get a palindrome (2952592).

The spelling of 2501540 in words is "two million, five hundred one thousand, five hundred forty".