55345973 has 2 divisors, whose sum is σ = 55345974. Its totient is φ = 55345972.

The previous prime is 55345967. The next prime is 55346017. The reversal of 55345973 is 37954355.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55011889 + 334084 = 7417^2 + 578^2 .

It is a cyclic number.

It is not a de Polignac number, because 55345973 - 2⁴ = 55345957 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55345973.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55345903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27672986 + 27672987.

It is an arithmetic number, because the mean of its divisors is an integer number (27672987).

Almost surely, 2^55345973 is an apocalyptic number.

It is an amenable number.

55345973 is a deficient number, since it is larger than the sum of its proper divisors (1).

55345973 is an equidigital number, since it uses as much as digits as its factorization.

55345973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 283500, while the sum is 41.

The square root of 55345973 is about 7439.4874151382. The cubic root of 55345973 is about 381.0909852672.

The spelling of 55345973 in words is "fifty-five million, three hundred forty-five thousand, nine hundred seventy-three".