55445253 has 4 divisors (see below), whose sum is σ = 73927008. Its totient is φ = 36963500.

The previous prime is 55445239. The next prime is 55445311. The reversal of 55445253 is 35254455.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55445253 - 2¹² = 55441157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55445213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9240873 + ... + 9240878.

It is an arithmetic number, because the mean of its divisors is an integer number (18481752).

Almost surely, 2^55445253 is an apocalyptic number.

It is an amenable number.

55445253 is a deficient number, since it is larger than the sum of its proper divisors (18481755).

55445253 is a wasteful number, since it uses less digits than its factorization.

55445253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18481754.

The product of its digits is 60000, while the sum is 33.

The square root of 55445253 is about 7446.1569282416. The cubic root of 55445253 is about 381.3187170591.

The spelling of 55445253 in words is "fifty-five million, four hundred forty-five thousand, two hundred fifty-three".