2215405545 has 32 divisors (see below), whose sum is σ = 3710582784. Its totient is φ = 1127313600.

The previous prime is 2215405513. The next prime is 2215405559. The reversal of 2215405545 is 5455045122.

It is not a de Polignac number, because 2215405545 - 2⁵ = 2215405513 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 537 + ... + 66566.

It is an arithmetic number, because the mean of its divisors is an integer number (115955712).

Almost surely, 2^2215405545 is an apocalyptic number.

It is an amenable number.

2215405545 is a deficient number, since it is larger than the sum of its proper divisors (1495177239).

2215405545 is a wasteful number, since it uses less digits than its factorization.

2215405545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67213.

The product of its (nonzero) digits is 40000, while the sum is 33.

The square root of 2215405545 is about 47068.0947670500. The cubic root of 2215405545 is about 1303.6201942622.

The spelling of 2215405545 in words is "two billion, two hundred fifteen million, four hundred five thousand, five hundred forty-five".