55329251 has 2 divisors, whose sum is σ = 55329252. Its totient is φ = 55329250.

The previous prime is 55329233. The next prime is 55329259. The reversal of 55329251 is 15292355.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55329251 - 2¹⁰ = 55328227 is a prime.

It is a super-2 number, since 2×55329251² = 6122652032442002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55329259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27664625 + 27664626.

It is an arithmetic number, because the mean of its divisors is an integer number (27664626).

Almost surely, 2^55329251 is an apocalyptic number.

55329251 is a deficient number, since it is larger than the sum of its proper divisors (1).

55329251 is an equidigital number, since it uses as much as digits as its factorization.

55329251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13500, while the sum is 32.

The square root of 55329251 is about 7438.3634624829. The cubic root of 55329251 is about 381.0526009909.

The spelling of 55329251 in words is "fifty-five million, three hundred twenty-nine thousand, two hundred fifty-one".