2215405001 has 2 divisors, whose sum is σ = 2215405002. Its totient is φ = 2215405000.

The previous prime is 2215404991. The next prime is 2215405009. The reversal of 2215405001 is 1005045122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2126593225 + 88811776 = 46115^2 + 9424^2 .

It is a cyclic number.

It is not a de Polignac number, because 2215405001 - 2²² = 2211210697 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2215405009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1107702500 + 1107702501.

It is an arithmetic number, because the mean of its divisors is an integer number (1107702501).

Almost surely, 2^2215405001 is an apocalyptic number.

It is an amenable number.

2215405001 is a deficient number, since it is larger than the sum of its proper divisors (1).

2215405001 is an equidigital number, since it uses as much as digits as its factorization.

2215405001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 2215405001 is about 47068.0889881882. The cubic root of 2215405001 is about 1303.6200875594.

The spelling of 2215405001 in words is "two billion, two hundred fifteen million, four hundred five thousand, one".