7215071051 has 4 divisors (see below), whose sum is σ = 7254933504. Its totient is φ = 7175208600.

The previous prime is 7215071029. The next prime is 7215071057. The reversal of 7215071051 is 1501705127.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7215071051 - 2⁶ = 7215070987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7215071057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19930955 + ... + 19931316.

It is an arithmetic number, because the mean of its divisors is an integer number (1813733376).

Almost surely, 2^7215071051 is an apocalyptic number.

7215071051 is a deficient number, since it is larger than the sum of its proper divisors (39862453).

7215071051 is a wasteful number, since it uses less digits than its factorization.

7215071051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39862452.

The product of its (nonzero) digits is 2450, while the sum is 29.

The square root of 7215071051 is about 84941.5743378942. The cubic root of 7215071051 is about 1932.3251394763.

Adding to 7215071051 its reverse (1501705127), we get a palindrome (8716776178).

It can be divided in two parts, 721507 and 1051, that multiplied together give a palindrome (758303857).

The spelling of 7215071051 in words is "seven billion, two hundred fifteen million, seventy-one thousand, fifty-one".