55601387 has 2 divisors, whose sum is σ = 55601388. Its totient is φ = 55601386.

The previous prime is 55601363. The next prime is 55601401. The reversal of 55601387 is 78310655.

55601387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55601387 - 2⁸ = 55601131 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55601347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27800693 + 27800694.

It is an arithmetic number, because the mean of its divisors is an integer number (27800694).

Almost surely, 2^55601387 is an apocalyptic number.

55601387 is a deficient number, since it is larger than the sum of its proper divisors (1).

55601387 is an equidigital number, since it uses as much as digits as its factorization.

55601387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 55601387 is about 7456.6337579366. The cubic root of 55601387 is about 381.6763131581.

The spelling of 55601387 in words is "fifty-five million, six hundred one thousand, three hundred eighty-seven".