55282987 has 2 divisors, whose sum is σ = 55282988. Its totient is φ = 55282986.

The previous prime is 55282967. The next prime is 55283017. The reversal of 55282987 is 78928255.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55282987 - 2⁷ = 55282859 is a prime.

It is not a weakly prime, because it can be changed into another prime (55282967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27641493 + 27641494.

It is an arithmetic number, because the mean of its divisors is an integer number (27641494).

Almost surely, 2^55282987 is an apocalyptic number.

55282987 is a deficient number, since it is larger than the sum of its proper divisors (1).

55282987 is an equidigital number, since it uses as much as digits as its factorization.

55282987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 403200, while the sum is 46.

The square root of 55282987 is about 7435.2529882984. The cubic root of 55282987 is about 380.9463646389.

It can be divided in two parts, 5528 and 2987, that added together give a triangular number (8515 = T₁₃₀).

The spelling of 55282987 in words is "fifty-five million, two hundred eighty-two thousand, nine hundred eighty-seven".