55029287 has 2 divisors, whose sum is σ = 55029288. Its totient is φ = 55029286.

The previous prime is 55029283. The next prime is 55029307. The reversal of 55029287 is 78292055.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55029287 - 2² = 55029283 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55029287.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55029281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27514643 + 27514644.

It is an arithmetic number, because the mean of its divisors is an integer number (27514644).

Almost surely, 2^55029287 is an apocalyptic number.

55029287 is a deficient number, since it is larger than the sum of its proper divisors (1).

55029287 is an equidigital number, since it uses as much as digits as its factorization.

55029287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 55029287 is about 7418.1727534481. The cubic root of 55029287 is about 380.3627353522.

The spelling of 55029287 in words is "fifty-five million, twenty-nine thousand, two hundred eighty-seven".