55275001 has 2 divisors, whose sum is σ = 55275002. Its totient is φ = 55275000.

The previous prime is 55274993. The next prime is 55275013. The reversal of 55275001 is 10057255.

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., 53582400 + 1692601 = 7320^2 + 1301^2 .

It is a cyclic number.

It is not a de Polignac number, because 55275001 - 2³ = 55274993 is a prime.

It is not a weakly prime, because it can be changed into another prime (55275061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27637500 + 27637501.

It is an arithmetic number, because the mean of its divisors is an integer number (27637501).

Almost surely, 2^55275001 is an apocalyptic number.

It is an amenable number.

55275001 is a deficient number, since it is larger than the sum of its proper divisors (1).

55275001 is an equidigital number, since it uses as much as digits as its factorization.

55275001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1750, while the sum is 25.

The square root of 55275001 is about 7434.7159327038. The cubic root of 55275001 is about 380.9280203324.

The spelling of 55275001 in words is "fifty-five million, two hundred seventy-five thousand, one".