53502061 has 2 divisors, whose sum is σ = 53502062. Its totient is φ = 53502060.

The previous prime is 53502047. The next prime is 53502067. The reversal of 53502061 is 16020535.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52490025 + 1012036 = 7245^2 + 1006^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53502061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53502067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26751030 + 26751031.

It is an arithmetic number, because the mean of its divisors is an integer number (26751031).

Almost surely, 2^53502061 is an apocalyptic number.

It is an amenable number.

53502061 is a deficient number, since it is larger than the sum of its proper divisors (1).

53502061 is an equidigital number, since it uses as much as digits as its factorization.

53502061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 53502061 is about 7314.5103048666. The cubic root of 53502061 is about 376.8109407204.

Adding to 53502061 its reverse (16020535), we get a palindrome (69522596).

The spelling of 53502061 in words is "fifty-three million, five hundred two thousand, sixty-one".