55023830 has 16 divisors (see below), whose sum is σ = 100667664. Its totient is φ = 21648480.

The previous prime is 55023827. The next prime is 55023833. The reversal of 55023830 is 3832055.

It is an interprime number because it is at equal distance from previous prime (55023827) and next prime (55023833).

It is a self number, because there is not a number n which added to its sum of digits gives 55023830.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55023833) 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, 44492 + ... + 45711.

It is an arithmetic number, because the mean of its divisors is an integer number (6291729).

Almost surely, 2^55023830 is an apocalyptic number.

55023830 is a deficient number, since it is larger than the sum of its proper divisors (45643834).

55023830 is a wasteful number, since it uses less digits than its factorization.

55023830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90271.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 55023830 is about 7417.8049313796. The cubic root of 55023830 is about 380.3501619985.

Adding to 55023830 its reverse (3832055), we get a palindrome (58855885).

The spelling of 55023830 in words is "fifty-five million, twenty-three thousand, eight hundred thirty".