55233251 has 2 divisors, whose sum is σ = 55233252. Its totient is φ = 55233250.

The previous prime is 55233239. The next prime is 55233253. The reversal of 55233251 is 15233255.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55233251 - 2¹⁰ = 55232227 is a prime.

Together with 55233253, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55233251.

It is not a weakly prime, because it can be changed into another prime (55233253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27616625 + 27616626.

It is an arithmetic number, because the mean of its divisors is an integer number (27616626).

Almost surely, 2^55233251 is an apocalyptic number.

55233251 is a deficient number, since it is larger than the sum of its proper divisors (1).

55233251 is an equidigital number, since it uses as much as digits as its factorization.

55233251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4500, while the sum is 26.

The square root of 55233251 is about 7431.9076285971. The cubic root of 55233251 is about 380.8320893790.

The spelling of 55233251 in words is "fifty-five million, two hundred thirty-three thousand, two hundred fifty-one".