2115650501 has 4 divisors (see below), whose sum is σ = 2115890604. Its totient is φ = 2115410400.

The previous prime is 2115650489. The next prime is 2115650531. The reversal of 2115650501 is 1050565112.

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

It can be written as a sum of positive squares in 2 ways, for example, as 249324100 + 1866326401 = 15790^2 + 43201^2 .

It is a cyclic number.

It is not a de Polignac number, because 2115650501 - 2¹⁰ = 2115649477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115650531) 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, 106310 + ... + 124631.

It is an arithmetic number, because the mean of its divisors is an integer number (528972651).

Almost surely, 2^2115650501 is an apocalyptic number.

It is an amenable number.

2115650501 is a deficient number, since it is larger than the sum of its proper divisors (240103).

2115650501 is an equidigital number, since it uses as much as digits as its factorization.

2115650501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240102.

The product of its (nonzero) digits is 1500, while the sum is 26.

The square root of 2115650501 is about 45996.2009409473. The cubic root of 2115650501 is about 1283.7525178267.

The spelling of 2115650501 in words is "two billion, one hundred fifteen million, six hundred fifty thousand, five hundred one".