7214539561 has 4 divisors (see below), whose sum is σ = 7217610624. Its totient is φ = 7211468500.

The previous prime is 7214539547. The next prime is 7214539589. The reversal of 7214539561 is 1659354127.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1659354127 = 1867 ⋅888781.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7214539561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7214539531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1532005 + ... + 1536706.

It is an arithmetic number, because the mean of its divisors is an integer number (1804402656).

Almost surely, 2^7214539561 is an apocalyptic number.

It is an amenable number.

7214539561 is a deficient number, since it is larger than the sum of its proper divisors (3071063).

7214539561 is a wasteful number, since it uses less digits than its factorization.

7214539561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3071062.

The product of its digits is 226800, while the sum is 43.

The square root of 7214539561 is about 84938.4457180610. The cubic root of 7214539561 is about 1932.2776908002.

The spelling of 7214539561 in words is "seven billion, two hundred fourteen million, five hundred thirty-nine thousand, five hundred sixty-one".