54737821 has 2 divisors, whose sum is σ = 54737822. Its totient is φ = 54737820.

The previous prime is 54737797. The next prime is 54737849. The reversal of 54737821 is 12873745.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53494596 + 1243225 = 7314^2 + 1115^2 .

It is a cyclic number.

It is not a de Polignac number, because 54737821 - 2⁵ = 54737789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54737021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27368910 + 27368911.

It is an arithmetic number, because the mean of its divisors is an integer number (27368911).

Almost surely, 2^54737821 is an apocalyptic number.

It is an amenable number.

54737821 is a deficient number, since it is larger than the sum of its proper divisors (1).

54737821 is an equidigital number, since it uses as much as digits as its factorization.

54737821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47040, while the sum is 37.

The square root of 54737821 is about 7398.5012671486. The cubic root of 54737821 is about 379.6900080366.

The spelling of 54737821 in words is "fifty-four million, seven hundred thirty-seven thousand, eight hundred twenty-one".