55623242 has 4 divisors (see below), whose sum is σ = 83434866. Its totient is φ = 27811620.

The previous prime is 55623229. The next prime is 55623251. The reversal of 55623242 is 24232655.

55623242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 54007801 + 1615441 = 7349^2 + 1271^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13905809 + ... + 13905812.

Almost surely, 2^55623242 is an apocalyptic number.

55623242 is a deficient number, since it is larger than the sum of its proper divisors (27811624).

55623242 is a wasteful number, since it uses less digits than its factorization.

55623242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27811623.

The product of its digits is 14400, while the sum is 29.

The square root of 55623242 is about 7458.0990875692. The cubic root of 55623242 is about 381.7263145675.

Adding to 55623242 its reverse (24232655), we get a palindrome (79855897).

The spelling of 55623242 in words is "fifty-five million, six hundred twenty-three thousand, two hundred forty-two".