53855257 has 4 divisors (see below), whose sum is σ = 53930880. Its totient is φ = 53779636.

The previous prime is 53855231. The next prime is 53855267. The reversal of 53855257 is 75255835.

It is a happy number.

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 53855257 - 2⁷ = 53855129 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53855267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36733 + ... + 38170.

It is an arithmetic number, because the mean of its divisors is an integer number (13482720).

Almost surely, 2^53855257 is an apocalyptic number.

It is an amenable number.

53855257 is a deficient number, since it is larger than the sum of its proper divisors (75623).

53855257 is an equidigital number, since it uses as much as digits as its factorization.

53855257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75622.

The product of its digits is 210000, while the sum is 40.

The square root of 53855257 is about 7338.6141062192. The cubic root of 53855257 is about 377.6383002759.

The spelling of 53855257 in words is "fifty-three million, eight hundred fifty-five thousand, two hundred fifty-seven".