55280823 has 32 divisors (see below), whose sum is σ = 84994560. Its totient is φ = 31674240.

The previous prime is 55280777. The next prime is 55280867. The reversal of 55280823 is 32808255.

It is not a de Polignac number, because 55280823 - 2¹⁰ = 55279799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55280023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44590 + ... + 45812.

It is an arithmetic number, because the mean of its divisors is an integer number (2656080).

Almost surely, 2^55280823 is an apocalyptic number.

55280823 is a deficient number, since it is larger than the sum of its proper divisors (29713737).

55280823 is a wasteful number, since it uses less digits than its factorization.

55280823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1319.

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 55280823 is about 7435.1074639174. The cubic root of 55280823 is about 380.9413939795.

The spelling of 55280823 in words is "fifty-five million, two hundred eighty thousand, eight hundred twenty-three".