2115501413 has 4 divisors (see below), whose sum is σ = 2155416588. Its totient is φ = 2075586240.

The previous prime is 2115501407. The next prime is 2115501419. The reversal of 2115501413 is 3141055112.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2115501407) and next prime (2115501419).

It can be written as a sum of positive squares in 2 ways, for example, as 1335025444 + 780475969 = 36538^2 + 27937^2 .

It is a cyclic number.

It is not a de Polignac number, because 2115501413 - 2⁴ = 2115501397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115501419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19957508 + ... + 19957613.

It is an arithmetic number, because the mean of its divisors is an integer number (538854147).

Almost surely, 2^2115501413 is an apocalyptic number.

It is an amenable number.

2115501413 is a deficient number, since it is larger than the sum of its proper divisors (39915175).

2115501413 is an equidigital number, since it uses as much as digits as its factorization.

2115501413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39915174.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 2115501413 is about 45994.5802568085. The cubic root of 2115501413 is about 1283.7223621541.

Adding to 2115501413 its reverse (3141055112), we get a palindrome (5256556525).

The spelling of 2115501413 in words is "two billion, one hundred fifteen million, five hundred one thousand, four hundred thirteen".