55821079479 has 8 divisors (see below), whose sum is σ = 81194297472. Its totient is φ = 33830957240.

The previous prime is 55821079471. The next prime is 55821079529. The reversal of 55821079479 is 97497012855.

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

It is a cyclic number.

It is not a de Polignac number, because 55821079479 - 2³ = 55821079471 is a prime.

It is a super-2 number, since 2×55821079479² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55821079471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 845773899 + ... + 845773964.

It is an arithmetic number, because the mean of its divisors is an integer number (10149287184).

Almost surely, 2^55821079479 is an apocalyptic number.

55821079479 is a deficient number, since it is larger than the sum of its proper divisors (25373217993).

55821079479 is a wasteful number, since it uses less digits than its factorization.

55821079479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1691547877.

The product of its (nonzero) digits is 6350400, while the sum is 57.

The spelling of 55821079479 in words is "fifty-five billion, eight hundred twenty-one million, seventy-nine thousand, four hundred seventy-nine".