2215445501 has 2 divisors, whose sum is σ = 2215445502. Its totient is φ = 2215445500.

The previous prime is 2215445489. The next prime is 2215445503. The reversal of 2215445501 is 1055445122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2169137476 + 46308025 = 46574^2 + 6805^2 .

It is a cyclic number.

It is not a de Polignac number, because 2215445501 - 2¹⁰ = 2215444477 is a prime.

It is a super-2 number, since 2×2215445501² = 9816397535802282002, which contains 22 as substring.

Together with 2215445503, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2215445503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1107722750 + 1107722751.

It is an arithmetic number, because the mean of its divisors is an integer number (1107722751).

Almost surely, 2^2215445501 is an apocalyptic number.

It is an amenable number.

2215445501 is a deficient number, since it is larger than the sum of its proper divisors (1).

2215445501 is an equidigital number, since it uses as much as digits as its factorization.

2215445501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8000, while the sum is 29.

The square root of 2215445501 is about 47068.5192140139. The cubic root of 2215445501 is about 1303.6280313728.

The spelling of 2215445501 in words is "two billion, two hundred fifteen million, four hundred forty-five thousand, five hundred one".