7215053505 has 32 divisors (see below), whose sum is σ = 12831177600. Its totient is φ = 3432199680.

The previous prime is 7215053437. The next prime is 7215053543. The reversal of 7215053505 is 5053505127.

7215053505 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-7215053505 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 403780 + ... + 421269.

It is an arithmetic number, because the mean of its divisors is an integer number (400974300).

Almost surely, 2^7215053505 is an apocalyptic number.

It is an amenable number.

7215053505 is a deficient number, since it is larger than the sum of its proper divisors (5616124095).

7215053505 is a wasteful number, since it uses less digits than its factorization.

7215053505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825121.

The product of its (nonzero) digits is 26250, while the sum is 33.

The square root of 7215053505 is about 84941.4710550742. The cubic root of 7215053505 is about 1932.3235730974.

The spelling of 7215053505 in words is "seven billion, two hundred fifteen million, fifty-three thousand, five hundred five".