55623679 has 4 divisors (see below), whose sum is σ = 55738384. Its totient is φ = 55508976.

The previous prime is 55623661. The next prime is 55623707. The reversal of 55623679 is 97632655.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97632655 = 5 ⋅19526531.

It is a cyclic number.

It is not a de Polignac number, because 55623679 - 2¹³ = 55615487 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 (55623619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56622 + ... + 57595.

It is an arithmetic number, because the mean of its divisors is an integer number (13934596).

Almost surely, 2^55623679 is an apocalyptic number.

55623679 is a deficient number, since it is larger than the sum of its proper divisors (114705).

55623679 is a wasteful number, since it uses less digits than its factorization.

55623679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114704.

The product of its digits is 340200, while the sum is 43.

The square root of 55623679 is about 7458.1283845211. The cubic root of 55623679 is about 381.7273142333.

The spelling of 55623679 in words is "fifty-five million, six hundred twenty-three thousand, six hundred seventy-nine".