55830251 has 4 divisors (see below), whose sum is σ = 55845504. Its totient is φ = 55815000.

The previous prime is 55830241. The next prime is 55830263. The reversal of 55830251 is 15203855.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55830251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55830221) 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, 1526 + ... + 10676.

It is an arithmetic number, because the mean of its divisors is an integer number (13961376).

Almost surely, 2^55830251 is an apocalyptic number.

55830251 is the 6101-st pentagonal number.

55830251 is a deficient number, since it is larger than the sum of its proper divisors (15253).

55830251 is an equidigital number, since it uses as much as digits as its factorization.

55830251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15252.

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 55830251 is about 7471.9643334267. The cubic root of 55830251 is about 382.1992760691.

The spelling of 55830251 in words is "fifty-five million, eight hundred thirty thousand, two hundred fifty-one".