2215042501 has 18 divisors (see below), whose sum is σ = 2602551942. Its totient is φ = 1879733520.

The previous prime is 2215042499. The next prime is 2215042513. The reversal of 2215042501 is 1052405122.

It can be written as a sum of positive squares in only one way, i.e., 2196328225 + 18714276 = 46865^2 + 4326^2 .

It is not a de Polignac number, because 2215042501 - 2¹ = 2215042499 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 (2215042541) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 517711 + ... + 521971.

It is an arithmetic number, because the mean of its divisors is an integer number (144586219).

Almost surely, 2^2215042501 is an apocalyptic number.

It is an amenable number.

2215042501 is a deficient number, since it is larger than the sum of its proper divisors (387509441).

2215042501 is an equidigital number, since it uses as much as digits as its factorization.

2215042501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4481 (or 4371 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 2215042501 is about 47064.2380263401. The cubic root of 2215042501 is about 1303.5489812142.

Adding to 2215042501 its reverse (1052405122), we get a palindrome (3267447623).

The spelling of 2215042501 in words is "two billion, two hundred fifteen million, forty-two thousand, five hundred one".