55644002 has 4 divisors (see below), whose sum is σ = 83466006. Its totient is φ = 27822000.

The previous prime is 55643981. The next prime is 55644007. The reversal of 55644002 is 20044655.

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., 52983841 + 2660161 = 7279^2 + 1631^2 .

It is not an unprimeable number, because it can be changed into a prime (55644007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13910999 + ... + 13911002.

Almost surely, 2^55644002 is an apocalyptic number.

55644002 is a deficient number, since it is larger than the sum of its proper divisors (27822004).

55644002 is a wasteful number, since it uses less digits than its factorization.

55644002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27822003.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 55644002 is about 7459.4907332874. The cubic root of 55644002 is about 381.7737986306.

Adding to 55644002 its reverse (20044655), we get a palindrome (75688657).

The spelling of 55644002 in words is "fifty-five million, six hundred forty-four thousand, two".