53237729 has 2 divisors, whose sum is σ = 53237730. Its totient is φ = 53237728.

The previous prime is 53237683. The next prime is 53237749. The reversal of 53237729 is 92773235.

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., 27583504 + 25654225 = 5252^2 + 5065^2 .

It is a cyclic number.

It is not a de Polignac number, because 53237729 - 2⁸ = 53237473 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 53237692 and 53237701.

It is not a weakly prime, because it can be changed into another prime (53237749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26618864 + 26618865.

It is an arithmetic number, because the mean of its divisors is an integer number (26618865).

Almost surely, 2^53237729 is an apocalyptic number.

It is an amenable number.

53237729 is a deficient number, since it is larger than the sum of its proper divisors (1).

53237729 is an equidigital number, since it uses as much as digits as its factorization.

53237729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 79380, while the sum is 38.

The square root of 53237729 is about 7296.4189161533. The cubic root of 53237729 is about 376.1893592185.

The spelling of 53237729 in words is "fifty-three million, two hundred thirty-seven thousand, seven hundred twenty-nine".