55670287 has 2 divisors, whose sum is σ = 55670288. Its totient is φ = 55670286.

The previous prime is 55670269. The next prime is 55670317. The reversal of 55670287 is 78207655.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55670287 - 2²³ = 47281679 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55670207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27835143 + 27835144.

It is an arithmetic number, because the mean of its divisors is an integer number (27835144).

Almost surely, 2^55670287 is an apocalyptic number.

55670287 is a deficient number, since it is larger than the sum of its proper divisors (1).

55670287 is an equidigital number, since it uses as much as digits as its factorization.

55670287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 117600, while the sum is 40.

The square root of 55670287 is about 7461.2523747693. The cubic root of 55670287 is about 381.8339030100.

The spelling of 55670287 in words is "fifty-five million, six hundred seventy thousand, two hundred eighty-seven".