55243430 has 32 divisors (see below), whose sum is σ = 110269728. Its totient is φ = 19756800.

The previous prime is 55243423. The next prime is 55243453. The reversal of 55243430 is 3434255.

It is a self number, because there is not a number n which added to its sum of digits gives 55243430.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2594 + ... + 10826.

It is an arithmetic number, because the mean of its divisors is an integer number (3445929).

Almost surely, 2^55243430 is an apocalyptic number.

55243430 is a deficient number, since it is larger than the sum of its proper divisors (55026298).

55243430 is a wasteful number, since it uses less digits than its factorization.

55243430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8312.

The product of its (nonzero) digits is 7200, while the sum is 26.

The square root of 55243430 is about 7432.5924144944. The cubic root of 55243430 is about 380.8554826047.

Adding to 55243430 its reverse (3434255), we get a palindrome (58677685).

The spelling of 55243430 in words is "fifty-five million, two hundred forty-three thousand, four hundred thirty".