53167561 has 2 divisors, whose sum is σ = 53167562. Its totient is φ = 53167560.

The previous prime is 53167519. The next prime is 53167589. The reversal of 53167561 is 16576135.

53167561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33640000 + 19527561 = 5800^2 + 4419^2 .

It is a cyclic number.

It is not a de Polignac number, because 53167561 - 2¹³ = 53159369 is a prime.

It is a super-3 number, since 3×53167561³ (a number of 24 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (53167501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26583780 + 26583781.

It is an arithmetic number, because the mean of its divisors is an integer number (26583781).

Almost surely, 2^53167561 is an apocalyptic number.

It is an amenable number.

53167561 is a deficient number, since it is larger than the sum of its proper divisors (1).

53167561 is an equidigital number, since it uses as much as digits as its factorization.

53167561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18900, while the sum is 34.

The square root of 53167561 is about 7291.6089445334. The cubic root of 53167561 is about 376.0240124434.

The spelling of 53167561 in words is "fifty-three million, one hundred sixty-seven thousand, five hundred sixty-one".