55479823 has 16 divisors (see below), whose sum is σ = 67682304. Its totient is φ = 44392320.

The previous prime is 55479811. The next prime is 55479833. The reversal of 55479823 is 32897455.

It is not a de Polignac number, because 55479823 - 2⁹ = 55479311 is a prime.

It is a super-4 number, since 4×55479823⁴ (a number of 32 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 55479823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55479803) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13278 + ... + 16948.

It is an arithmetic number, because the mean of its divisors is an integer number (4230144).

Almost surely, 2^55479823 is an apocalyptic number.

55479823 is a deficient number, since it is larger than the sum of its proper divisors (12202481).

55479823 is a wasteful number, since it uses less digits than its factorization.

55479823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3822.

The product of its digits is 302400, while the sum is 43.

The square root of 55479823 is about 7448.4778982018. The cubic root of 55479823 is about 381.3979510698.

The spelling of 55479823 in words is "fifty-five million, four hundred seventy-nine thousand, eight hundred twenty-three".