54647015261 has 2 divisors, whose sum is σ = 54647015262. Its totient is φ = 54647015260.

The previous prime is 54647015221. The next prime is 54647015317. The reversal of 54647015261 is 16251074645.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54200496100 + 446519161 = 232810^2 + 21131^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54647015261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54647015201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27323507630 + 27323507631.

It is an arithmetic number, because the mean of its divisors is an integer number (27323507631).

Almost surely, 2^54647015261 is an apocalyptic number.

It is an amenable number.

54647015261 is a deficient number, since it is larger than the sum of its proper divisors (1).

54647015261 is an equidigital number, since it uses as much as digits as its factorization.

54647015261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 201600, while the sum is 41.

The spelling of 54647015261 in words is "fifty-four billion, six hundred forty-seven million, fifteen thousand, two hundred sixty-one".