427550087 has 2 divisors, whose sum is σ = 427550088. Its totient is φ = 427550086.

The previous prime is 427550063. The next prime is 427550089. The reversal of 427550087 is 780055724.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 427550087 - 2¹⁰ = 427549063 is a prime.

Together with 427550089, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 427550087.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (427550089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213775043 + 213775044.

It is an arithmetic number, because the mean of its divisors is an integer number (213775044).

Almost surely, 2^427550087 is an apocalyptic number.

427550087 is a deficient number, since it is larger than the sum of its proper divisors (1).

427550087 is an equidigital number, since it uses as much as digits as its factorization.

427550087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 78400, while the sum is 38.

The square root of 427550087 is about 20677.2843236243. The cubic root of 427550087 is about 753.3480463925.

The spelling of 427550087 in words is "four hundred twenty-seven million, five hundred fifty thousand, eighty-seven".