2115501 has 4 divisors (see below), whose sum is σ = 2820672. Its totient is φ = 1410332.

The previous prime is 2115499. The next prime is 2115511. The reversal of 2115501 is 1055112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2115501 - 2¹ = 2115499 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115511) 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, 352581 + ... + 352586.

It is an arithmetic number, because the mean of its divisors is an integer number (705168).

2^2115501 is an apocalyptic number.

It is an amenable number.

2115501 is a deficient number, since it is larger than the sum of its proper divisors (705171).

2115501 is an equidigital number, since it uses as much as digits as its factorization.

2115501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705170.

The product of its (nonzero) digits is 50, while the sum is 15.

The square root of 2115501 is about 1454.4761943738. The cubic root of 2115501 is about 128.3722278616.

The spelling of 2115501 in words is "two million, one hundred fifteen thousand, five hundred one".