2215644501 has 16 divisors (see below), whose sum is σ = 3431570048. Its totient is φ = 1245326400.

The previous prime is 2215644499. The next prime is 2215644517. The reversal of 2215644501 is 1054465122.

It is not a de Polignac number, because 2215644501 - 2¹ = 2215644499 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 (2215644521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 863530 + ... + 866091.

It is an arithmetic number, because the mean of its divisors is an integer number (214473128).

Almost surely, 2^2215644501 is an apocalyptic number.

2215644501 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2215644501 is a deficient number, since it is larger than the sum of its proper divisors (1215925547).

2215644501 is a wasteful number, since it uses less digits than its factorization.

2215644501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1729692.

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 2215644501 is about 47070.6331060036. The cubic root of 2215644501 is about 1303.6670625310.

The spelling of 2215644501 in words is "two billion, two hundred fifteen million, six hundred forty-four thousand, five hundred one".