55023442 has 4 divisors (see below), whose sum is σ = 82535166. Its totient is φ = 27511720.

The previous prime is 55023431. The next prime is 55023473. The reversal of 55023442 is 24432055.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24432055 = 5 ⋅4886411.

It can be written as a sum of positive squares in only one way, i.e., 39175081 + 15848361 = 6259^2 + 3981^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13755859 + ... + 13755862.

Almost surely, 2^55023442 is an apocalyptic number.

55023442 is a deficient number, since it is larger than the sum of its proper divisors (27511724).

55023442 is a wasteful number, since it uses less digits than its factorization.

55023442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27511723.

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 55023442 is about 7417.7787780440. The cubic root of 55023442 is about 380.3492679846.

Adding to 55023442 its reverse (24432055), we get a palindrome (79455497).

The spelling of 55023442 in words is "fifty-five million, twenty-three thousand, four hundred forty-two".