55204973 has 2 divisors, whose sum is σ = 55204974. Its totient is φ = 55204972.

The previous prime is 55204969. The next prime is 55204993. The reversal of 55204973 is 37940255.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31214569 + 23990404 = 5587^2 + 4898^2 .

It is a cyclic number.

It is not a de Polignac number, because 55204973 - 2² = 55204969 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55204913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27602486 + 27602487.

It is an arithmetic number, because the mean of its divisors is an integer number (27602487).

Almost surely, 2^55204973 is an apocalyptic number.

It is an amenable number.

55204973 is a deficient number, since it is larger than the sum of its proper divisors (1).

55204973 is an equidigital number, since it uses as much as digits as its factorization.

55204973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37800, while the sum is 35.

The square root of 55204973 is about 7430.0049125152. The cubic root of 55204973 is about 380.7670862151.

The spelling of 55204973 in words is "fifty-five million, two hundred four thousand, nine hundred seventy-three".