53086257 has 72 divisors (see below), whose sum is σ = 96727176. Its totient is φ = 27869184.

The previous prime is 53086237. The next prime is 53086259. The reversal of 53086257 is 75268035.

It can be written as a sum of positive squares in 4 ways, for example, as 14447601 + 38638656 = 3801^2 + 6216^2 .

It is not a de Polignac number, because 53086257 - 2⁶ = 53086193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53086259) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 547233 + ... + 547329.

It is an arithmetic number, because the mean of its divisors is an integer number (1343433).

Almost surely, 2^53086257 is an apocalyptic number.

It is an amenable number.

53086257 is a deficient number, since it is larger than the sum of its proper divisors (43640919).

53086257 is a wasteful number, since it uses less digits than its factorization.

53086257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207 (or 197 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 53086257 is about 7286.0316359456. The cubic root of 53086257 is about 375.8322422943.

The spelling of 53086257 in words is "fifty-three million, eighty-six thousand, two hundred fifty-seven".