53782909 has 2 divisors, whose sum is σ = 53782910. Its totient is φ = 53782908.

The previous prime is 53782903. The next prime is 53782913. The reversal of 53782909 is 90928735.

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., 52157284 + 1625625 = 7222^2 + 1275^2 .

It is a cyclic number.

It is not a de Polignac number, because 53782909 - 2⁹ = 53782397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53782903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26891454 + 26891455.

It is an arithmetic number, because the mean of its divisors is an integer number (26891455).

Almost surely, 2^53782909 is an apocalyptic number.

It is an amenable number.

53782909 is a deficient number, since it is larger than the sum of its proper divisors (1).

53782909 is an equidigital number, since it uses as much as digits as its factorization.

53782909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 53782909 is about 7333.6831810489. The cubic root of 53782909 is about 377.4691207582.

The spelling of 53782909 in words is "fifty-three million, seven hundred eighty-two thousand, nine hundred nine".