55905279 has 8 divisors (see below), whose sum is σ = 74795952. Its totient is φ = 37142400.

The previous prime is 55905257. The next prime is 55905287. The reversal of 55905279 is 97250955.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55905279 - 2⁸ = 55905023 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55905279.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55905209) 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 7 ways as a sum of consecutive naturals, for example, 30922 + ... + 32679.

It is an arithmetic number, because the mean of its divisors is an integer number (9349494).

Almost surely, 2^55905279 is an apocalyptic number.

55905279 is a deficient number, since it is larger than the sum of its proper divisors (18890673).

55905279 is a wasteful number, since it uses less digits than its factorization.

55905279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63897.

The product of its (nonzero) digits is 141750, while the sum is 42.

The square root of 55905279 is about 7476.9832820463. The cubic root of 55905279 is about 382.3704067794.

The spelling of 55905279 in words is "fifty-five million, nine hundred five thousand, two hundred seventy-nine".