53243501 has 2 divisors, whose sum is σ = 53243502. Its totient is φ = 53243500.

The previous prime is 53243497. The next prime is 53243537. The reversal of 53243501 is 10534235.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41615401 + 11628100 = 6451^2 + 3410^2 .

It is a cyclic number.

It is not a de Polignac number, because 53243501 - 2² = 53243497 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53243581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26621750 + 26621751.

It is an arithmetic number, because the mean of its divisors is an integer number (26621751).

Almost surely, 2^53243501 is an apocalyptic number.

It is an amenable number.

53243501 is a deficient number, since it is larger than the sum of its proper divisors (1).

53243501 is an equidigital number, since it uses as much as digits as its factorization.

53243501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 53243501 is about 7296.8144419329. The cubic root of 53243501 is about 376.2029541292.

Adding to 53243501 its reverse (10534235), we get a palindrome (63777736).

The spelling of 53243501 in words is "fifty-three million, two hundred forty-three thousand, five hundred one".