55023251 has 2 divisors, whose sum is σ = 55023252. Its totient is φ = 55023250.

The previous prime is 55023191. The next prime is 55023253. The reversal of 55023251 is 15232055.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55023251 is a prime.

Together with 55023253, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55023253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27511625 + 27511626.

It is an arithmetic number, because the mean of its divisors is an integer number (27511626).

Almost surely, 2^55023251 is an apocalyptic number.

55023251 is a deficient number, since it is larger than the sum of its proper divisors (1).

55023251 is an equidigital number, since it uses as much as digits as its factorization.

55023251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 55023251 is about 7417.7659035588. The cubic root of 55023251 is about 380.3488278886.

The spelling of 55023251 in words is "fifty-five million, twenty-three thousand, two hundred fifty-one".