4656561121 has 3 divisors (see below), whose sum is σ = 4656629361. Its totient is φ = 4656492882.

The previous prime is 4656561083. The next prime is 4656561149. The reversal of 4656561121 is 1211656564.

The square root of 4656561121 is 68239.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a de Polignac number, because none of the positive numbers 2^k-4656561121 is a prime.

It is a super-2 number, since 2×4656561121² = 43367122947217553282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4656561191) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 34120 + ... + 102358.

It is an arithmetic number, because the mean of its divisors is an integer number (1552209787).

Almost surely, 2^4656561121 is an apocalyptic number.

4656561121 is the 68239-th square number.

4656561121 is the 34120-th centered octagonal number.

It is an amenable number.

4656561121 is a deficient number, since it is larger than the sum of its proper divisors (68240).

4656561121 is an frugal number, since it uses more digits than its factorization.

4656561121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136478 (or 68239 counting only the distinct ones).

The product of its digits is 43200, while the sum is 37.

The cubic root of 4656561121 is about 1669.8921991681.

The spelling of 4656561121 in words is "four billion, six hundred fifty-six million, five hundred sixty-one thousand, one hundred twenty-one".