55433251 has 4 divisors (see below), whose sum is σ = 55530904. Its totient is φ = 55335600.

The previous prime is 55433227. The next prime is 55433303. The reversal of 55433251 is 15233455.

55433251 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 is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55433251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55433221) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 47970 + ... + 49111.

It is an arithmetic number, because the mean of its divisors is an integer number (13882726).

Almost surely, 2^55433251 is an apocalyptic number.

55433251 is a deficient number, since it is larger than the sum of its proper divisors (97653).

55433251 is an equidigital number, since it uses as much as digits as its factorization.

55433251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97652.

The product of its digits is 9000, while the sum is 28.

The square root of 55433251 is about 7445.3509655355. The cubic root of 55433251 is about 381.2912009222.

The spelling of 55433251 in words is "fifty-five million, four hundred thirty-three thousand, two hundred fifty-one".