53558251 has 2 divisors, whose sum is σ = 53558252. Its totient is φ = 53558250.

The previous prime is 53558231. The next prime is 53558269. The reversal of 53558251 is 15285535.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53558251 - 2²³ = 45169643 is a prime.

It is not a weakly prime, because it can be changed into another prime (53558201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26779125 + 26779126.

It is an arithmetic number, because the mean of its divisors is an integer number (26779126).

Almost surely, 2^53558251 is an apocalyptic number.

53558251 is a deficient number, since it is larger than the sum of its proper divisors (1).

53558251 is an equidigital number, since it uses as much as digits as its factorization.

53558251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30000, while the sum is 34.

The square root of 53558251 is about 7318.3502922448. The cubic root of 53558251 is about 376.9428085304.

The spelling of 53558251 in words is "fifty-three million, five hundred fifty-eight thousand, two hundred fifty-one".