2645215501 has 2 divisors, whose sum is σ = 2645215502. Its totient is φ = 2645215500.

The previous prime is 2645215493. The next prime is 2645215583. The reversal of 2645215501 is 1055125462.

2645215501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2332986601 + 312228900 = 48301^2 + 17670^2 .

It is a cyclic number.

It is not a de Polignac number, because 2645215501 - 2³ = 2645215493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2645212501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1322607750 + 1322607751.

It is an arithmetic number, because the mean of its divisors is an integer number (1322607751).

Almost surely, 2^2645215501 is an apocalyptic number.

It is an amenable number.

2645215501 is a deficient number, since it is larger than the sum of its proper divisors (1).

2645215501 is an equidigital number, since it uses as much as digits as its factorization.

2645215501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12000, while the sum is 31.

The square root of 2645215501 is about 51431.6585480188. The cubic root of 2645215501 is about 1382.9941816398.

The spelling of 2645215501 in words is "two billion, six hundred forty-five million, two hundred fifteen thousand, five hundred one".