7150562721 has 27 divisors (see below), whose sum is σ = 10502567283. Its totient is φ = 4688061840.

The previous prime is 7150562711. The next prime is 7150562773. The reversal of 7150562721 is 1272650517.

The square root of 7150562721 is 84561.

It is a perfect power (a square), and thus also a powerful number.

7150562721 is a `hidden beast` number, since 7 + 1 + 5 + 0 + 5 + 627 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4792100625 + 2358462096 = 69225^2 + 48564^2 .

It is not a de Polignac number, because 7150562721 - 2¹⁷ = 7150431649 is a prime.

It is a super-2 number, since 2×7150562721² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7150562711) by changing a digit.

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 26 ways as a sum of consecutive naturals, for example, 18011295 + ... + 18011691.

Almost surely, 2^7150562721 is an apocalyptic number.

7150562721 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

7150562721 is the 84561-st square number.

7150562721 is the 42281-st centered octagonal number.

It is an amenable number.

7150562721 is a deficient number, since it is larger than the sum of its proper divisors (3352004562).

7150562721 is an frugal number, since it uses more digits than its factorization.

7150562721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 942 (or 471 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 36.

The cubic root of 7150562721 is about 1926.5490625399.

Multiplying 7150562721 by its sum of digits (36), we get a square (257420257956 = 507366²).

The spelling of 7150562721 in words is "seven billion, one hundred fifty million, five hundred sixty-two thousand, seven hundred twenty-one".