55672987 has 2 divisors, whose sum is σ = 55672988. Its totient is φ = 55672986.

The previous prime is 55672963. The next prime is 55673029. The reversal of 55672987 is 78927655.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55672987 - 2¹⁹ = 55148699 is a prime.

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 55672987.

It is not a weakly prime, because it can be changed into another prime (55672927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27836493 + 27836494.

It is an arithmetic number, because the mean of its divisors is an integer number (27836494).

Almost surely, 2^55672987 is an apocalyptic number.

55672987 is a deficient number, since it is larger than the sum of its proper divisors (1).

55672987 is an equidigital number, since it uses as much as digits as its factorization.

55672987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1058400, while the sum is 49.

The square root of 55672987 is about 7461.4333073479. The cubic root of 55672987 is about 381.8400758712.

The spelling of 55672987 in words is "fifty-five million, six hundred seventy-two thousand, nine hundred eighty-seven".