55520701 has 2 divisors, whose sum is σ = 55520702. Its totient is φ = 55520700.

The previous prime is 55520693. The next prime is 55520713. The reversal of 55520701 is 10702555.

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., 54007801 + 1512900 = 7349^2 + 1230^2 .

It is a cyclic number.

It is not a de Polignac number, because 55520701 - 2³ = 55520693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55520741) 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, 27760350 + 27760351.

It is an arithmetic number, because the mean of its divisors is an integer number (27760351).

Almost surely, 2^55520701 is an apocalyptic number.

It is an amenable number.

55520701 is a deficient number, since it is larger than the sum of its proper divisors (1).

55520701 is an equidigital number, since it uses as much as digits as its factorization.

55520701 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 55520701 is about 7451.2214434950. The cubic root of 55520701 is about 381.4916004786.

The spelling of 55520701 in words is "fifty-five million, five hundred twenty thousand, seven hundred one".