55287023 has 4 divisors (see below), whose sum is σ = 60313128. Its totient is φ = 50260920.

The previous prime is 55287013. The next prime is 55287041. The reversal of 55287023 is 32078255.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55287023 - 2⁸ = 55286767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55287013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2513036 + ... + 2513057.

It is an arithmetic number, because the mean of its divisors is an integer number (15078282).

Almost surely, 2^55287023 is an apocalyptic number.

55287023 is a deficient number, since it is larger than the sum of its proper divisors (5026105).

55287023 is a wasteful number, since it uses less digits than its factorization.

55287023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5026104.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 55287023 is about 7435.5243930741. The cubic root of 55287023 is about 380.9556348936.

The spelling of 55287023 in words is "fifty-five million, two hundred eighty-seven thousand, twenty-three".