53561567 has 2 divisors, whose sum is σ = 53561568. Its totient is φ = 53561566.

The previous prime is 53561507. The next prime is 53561587. The reversal of 53561567 is 76516535.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53561567 - 2¹⁴ = 53545183 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53561567.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53561507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26780783 + 26780784.

It is an arithmetic number, because the mean of its divisors is an integer number (26780784).

Almost surely, 2^53561567 is an apocalyptic number.

53561567 is a deficient number, since it is larger than the sum of its proper divisors (1).

53561567 is an equidigital number, since it uses as much as digits as its factorization.

53561567 is an evil number, because the sum of its binary digits is even.

The product of its digits is 94500, while the sum is 38.

The square root of 53561567 is about 7318.5768425289. The cubic root of 53561567 is about 376.9505877025.

The spelling of 53561567 in words is "fifty-three million, five hundred sixty-one thousand, five hundred sixty-seven".