55256573 has 2 divisors, whose sum is σ = 55256574. Its totient is φ = 55256572.

The previous prime is 55256549. The next prime is 55256611. The reversal of 55256573 is 37565255.

It is an a-pointer prime, because the next prime (55256611) can be obtained adding 55256573 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53027524 + 2229049 = 7282^2 + 1493^2 .

It is a cyclic number.

It is not a de Polignac number, because 55256573 - 2⁸ = 55256317 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 (55256533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27628286 + 27628287.

It is an arithmetic number, because the mean of its divisors is an integer number (27628287).

Almost surely, 2^55256573 is an apocalyptic number.

It is an amenable number.

55256573 is a deficient number, since it is larger than the sum of its proper divisors (1).

55256573 is an equidigital number, since it uses as much as digits as its factorization.

55256573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 157500, while the sum is 38.

The square root of 55256573 is about 7433.4765083371. The cubic root of 55256573 is about 380.8856834008.

The spelling of 55256573 in words is "fifty-five million, two hundred fifty-six thousand, five hundred seventy-three".