53566477 has 2 divisors, whose sum is σ = 53566478. Its totient is φ = 53566476.

The previous prime is 53566423. The next prime is 53566483. The reversal of 53566477 is 77466535.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45981961 + 7584516 = 6781^2 + 2754^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53566477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53567477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26783238 + 26783239.

It is an arithmetic number, because the mean of its divisors is an integer number (26783239).

Almost surely, 2^53566477 is an apocalyptic number.

It is an amenable number.

53566477 is a deficient number, since it is larger than the sum of its proper divisors (1).

53566477 is an equidigital number, since it uses as much as digits as its factorization.

53566477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 529200, while the sum is 43.

The square root of 53566477 is about 7318.9122825731. The cubic root of 53566477 is about 376.9621057302.

The spelling of 53566477 in words is "fifty-three million, five hundred sixty-six thousand, four hundred seventy-seven".