54872261 has 2 divisors, whose sum is σ = 54872262. Its totient is φ = 54872260.

The previous prime is 54872239. The next prime is 54872281. The reversal of 54872261 is 16227845.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54390625 + 481636 = 7375^2 + 694^2 .

It is a cyclic number.

It is not a de Polignac number, because 54872261 - 2⁶ = 54872197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54872231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27436130 + 27436131.

It is an arithmetic number, because the mean of its divisors is an integer number (27436131).

Almost surely, 2^54872261 is an apocalyptic number.

It is an amenable number.

54872261 is a deficient number, since it is larger than the sum of its proper divisors (1).

54872261 is an equidigital number, since it uses as much as digits as its factorization.

54872261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26880, while the sum is 35.

The square root of 54872261 is about 7407.5813191621. The cubic root of 54872261 is about 380.0006024921. Note that the first 3 decimals are identical.

The spelling of 54872261 in words is "fifty-four million, eight hundred seventy-two thousand, two hundred sixty-one".