54601201561 has 3 divisors (see below), whose sum is σ = 54601435231. Its totient is φ = 54600967892.

The previous prime is 54601201549. The next prime is 54601201619. The reversal of 54601201561 is 16510210645.

The square root of 54601201561 is 233669.

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 can be written as a sum of positive squares in only one way, i.e., 43318513161 + 11282688400 = 208131^2 + 106220^2 .

It is not a de Polignac number, because 54601201561 - 2¹⁹ = 54600677273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54601201961) 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, 116835 + ... + 350503.

Almost surely, 2^54601201561 is an apocalyptic number.

54601201561 is the 233669-th square number.

54601201561 is the 116835-th centered octagonal number.

It is an amenable number.

54601201561 is a deficient number, since it is larger than the sum of its proper divisors (233670).

54601201561 is an frugal number, since it uses more digits than its factorization.

54601201561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467338 (or 233669 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 31.

It can be divided in two parts, 5460 and 1201561, that added together give a palindrome (1207021).

The spelling of 54601201561 in words is "fifty-four billion, six hundred one million, two hundred one thousand, five hundred sixty-one".