53090861 has 2 divisors, whose sum is σ = 53090862. Its totient is φ = 53090860.

The previous prime is 53090839. The next prime is 53090887. The reversal of 53090861 is 16809035.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51696100 + 1394761 = 7190^2 + 1181^2 .

It is a cyclic number.

It is not a de Polignac number, because 53090861 - 2¹⁴ = 53074477 is a prime.

It is equal to p_3175169 and since 53090861 and 3175169 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53099861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26545430 + 26545431.

It is an arithmetic number, because the mean of its divisors is an integer number (26545431).

Almost surely, 2^53090861 is an apocalyptic number.

It is an amenable number.

53090861 is a deficient number, since it is larger than the sum of its proper divisors (1).

53090861 is an equidigital number, since it uses as much as digits as its factorization.

53090861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 53090861 is about 7286.3475761180. The cubic root of 53090861 is about 375.8431068867.

Adding to 53090861 its reverse (16809035), we get a palindrome (69899896).

The spelling of 53090861 in words is "fifty-three million, ninety thousand, eight hundred sixty-one".