55550587 has 2 divisors, whose sum is σ = 55550588. Its totient is φ = 55550586.

The previous prime is 55550557. The next prime is 55550617. The reversal of 55550587 is 78505555.

It is a balanced prime because it is at equal distance from previous prime (55550557) and next prime (55550617).

It is a cyclic number.

It is not a de Polignac number, because 55550587 - 2⁷ = 55550459 is a prime.

It is not a weakly prime, because it can be changed into another prime (55550527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27775293 + 27775294.

It is an arithmetic number, because the mean of its divisors is an integer number (27775294).

Almost surely, 2^55550587 is an apocalyptic number.

55550587 is a deficient number, since it is larger than the sum of its proper divisors (1).

55550587 is an equidigital number, since it uses as much as digits as its factorization.

55550587 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 175000, while the sum is 40.

The square root of 55550587 is about 7453.2266167077. The cubic root of 55550587 is about 381.5600386927.

The spelling of 55550587 in words is "fifty-five million, five hundred fifty thousand, five hundred eighty-seven".