53656417 has 2 divisors, whose sum is σ = 53656418. Its totient is φ = 53656416.

The previous prime is 53656397. The next prime is 53656433. The reversal of 53656417 is 71465635.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48011041 + 5645376 = 6929^2 + 2376^2 .

It is a cyclic number.

It is not a de Polignac number, because 53656417 - 2⁷ = 53656289 is a prime.

It is a super-2 number, since 2×53656417² = 5758022170555778, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (53656487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26828208 + 26828209.

It is an arithmetic number, because the mean of its divisors is an integer number (26828209).

Almost surely, 2^53656417 is an apocalyptic number.

It is an amenable number.

53656417 is a deficient number, since it is larger than the sum of its proper divisors (1).

53656417 is an equidigital number, since it uses as much as digits as its factorization.

53656417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75600, while the sum is 37.

The square root of 53656417 is about 7325.0540612340. The cubic root of 53656417 is about 377.1729653078.

It can be divided in two parts, 536 and 56417, that added together give a triangular number (56953 = T₃₃₇).

The spelling of 53656417 in words is "fifty-three million, six hundred fifty-six thousand, four hundred seventeen".