53658257 has 4 divisors (see below), whose sum is σ = 53750256. Its totient is φ = 53566260.

The previous prime is 53658247. The next prime is 53658277. The reversal of 53658257 is 75285635.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 53658257 - 2²⁰ = 52609681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53658247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45119 + ... + 46292.

It is an arithmetic number, because the mean of its divisors is an integer number (13437564).

Almost surely, 2^53658257 is an apocalyptic number.

It is an amenable number.

53658257 is a deficient number, since it is larger than the sum of its proper divisors (91999).

53658257 is an equidigital number, since it uses as much as digits as its factorization.

53658257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91998.

The product of its digits is 252000, while the sum is 41.

The square root of 53658257 is about 7325.1796564999. The cubic root of 53658257 is about 377.1772766301.

The spelling of 53658257 in words is "fifty-three million, six hundred fifty-eight thousand, two hundred fifty-seven".