55210487 has 2 divisors, whose sum is σ = 55210488. Its totient is φ = 55210486.

The previous prime is 55210483. The next prime is 55210513. The reversal of 55210487 is 78401255.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55210487 - 2² = 55210483 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 (55210481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27605243 + 27605244.

It is an arithmetic number, because the mean of its divisors is an integer number (27605244).

Almost surely, 2^55210487 is an apocalyptic number.

55210487 is a deficient number, since it is larger than the sum of its proper divisors (1).

55210487 is an equidigital number, since it uses as much as digits as its factorization.

55210487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 55210487 is about 7430.3759662617. The cubic root of 55210487 is about 380.7797630913.

The spelling of 55210487 in words is "fifty-five million, two hundred ten thousand, four hundred eighty-seven".