52420542061 has 2 divisors, whose sum is σ = 52420542062. Its totient is φ = 52420542060.

The previous prime is 52420542019. The next prime is 52420542073. The reversal of 52420542061 is 16024502425.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52390632100 + 29909961 = 228890^2 + 5469^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52420542061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52420543061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26210271030 + 26210271031.

It is an arithmetic number, because the mean of its divisors is an integer number (26210271031).

Almost surely, 2^52420542061 is an apocalyptic number.

It is an amenable number.

52420542061 is a deficient number, since it is larger than the sum of its proper divisors (1).

52420542061 is an equidigital number, since it uses as much as digits as its factorization.

52420542061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19200, while the sum is 31.

The spelling of 52420542061 in words is "fifty-two billion, four hundred twenty million, five hundred forty-two thousand, sixty-one".