2106501540 has 96 divisors (see below), whose sum is σ = 6929387136. Its totient is φ = 471383040.

The previous prime is 2106501539. The next prime is 2106501541. The reversal of 2106501540 is 451056012.

It is an interprime number because it is at equal distance from previous prime (2106501539) and next prime (2106501541).

It is a self number, because there is not a number n which added to its sum of digits gives 2106501540.

It is not an unprimeable number, because it can be changed into a prime (2106501541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 114177 + ... + 131336.

It is an arithmetic number, because the mean of its divisors is an integer number (72181116).

Almost surely, 2^2106501540 is an apocalyptic number.

2106501540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2106501540 is an abundant number, since it is smaller than the sum of its proper divisors (4822885596).

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

2106501540 is a wasteful number, since it uses less digits than its factorization.

2106501540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245549 (or 245547 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 2106501540 is about 45896.6397462821. The cubic root of 2106501540 is about 1281.8993490083.

Adding to 2106501540 its reverse (451056012), we get a palindrome (2557557552).

The spelling of 2106501540 in words is "two billion, one hundred six million, five hundred one thousand, five hundred forty".