54646861 has 2 divisors, whose sum is σ = 54646862. Its totient is φ = 54646860.

The previous prime is 54646859. The next prime is 54646901. The reversal of 54646861 is 16864645.

It is a happy number.

It is an a-pointer prime, because the next prime (54646901) can be obtained adding 54646861 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38365636 + 16281225 = 6194^2 + 4035^2 .

It is a cyclic number.

It is not a de Polignac number, because 54646861 - 2¹ = 54646859 is a prime.

Together with 54646859, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54646811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27323430 + 27323431.

It is an arithmetic number, because the mean of its divisors is an integer number (27323431).

Almost surely, 2^54646861 is an apocalyptic number.

It is an amenable number.

54646861 is a deficient number, since it is larger than the sum of its proper divisors (1).

54646861 is an equidigital number, since it uses as much as digits as its factorization.

54646861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 138240, while the sum is 40.

The square root of 54646861 is about 7392.3515203215. The cubic root of 54646861 is about 379.4795761362.

The spelling of 54646861 in words is "fifty-four million, six hundred forty-six thousand, eight hundred sixty-one".