55430005251 has 4 divisors (see below), whose sum is σ = 73906673672. Its totient is φ = 36953336832.

The previous prime is 55430005207. The next prime is 55430005261. The reversal of 55430005251 is 15250003455.

It is a happy number.

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

It is not a de Polignac number, because 55430005251 - 2¹¹ = 55430003203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55430005201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9238334206 + ... + 9238334211.

It is an arithmetic number, because the mean of its divisors is an integer number (18476668418).

Almost surely, 2^55430005251 is an apocalyptic number.

55430005251 is a deficient number, since it is larger than the sum of its proper divisors (18476668421).

55430005251 is a wasteful number, since it uses less digits than its factorization.

55430005251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18476668420.

The product of its (nonzero) digits is 15000, while the sum is 30.

The spelling of 55430005251 in words is "fifty-five billion, four hundred thirty million, five thousand, two hundred fifty-one".