55889513 has 2 divisors, whose sum is σ = 55889514. Its totient is φ = 55889512.

The previous prime is 55889501. The next prime is 55889539. The reversal of 55889513 is 31598855.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34480384 + 21409129 = 5872^2 + 4627^2 .

It is a cyclic number.

It is not a de Polignac number, because 55889513 - 2¹⁰ = 55888489 is a prime.

It is not a weakly prime, because it can be changed into another prime (55889543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27944756 + 27944757.

It is an arithmetic number, because the mean of its divisors is an integer number (27944757).

Almost surely, 2^55889513 is an apocalyptic number.

It is an amenable number.

55889513 is a deficient number, since it is larger than the sum of its proper divisors (1).

55889513 is an equidigital number, since it uses as much as digits as its factorization.

55889513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216000, while the sum is 44.

The square root of 55889513 is about 7475.9289054940. The cubic root of 55889513 is about 382.3344589600.

The spelling of 55889513 in words is "fifty-five million, eight hundred eighty-nine thousand, five hundred thirteen".