53781367 has 2 divisors, whose sum is σ = 53781368. Its totient is φ = 53781366.

The previous prime is 53781323. The next prime is 53781407. The reversal of 53781367 is 76318735.

It is an a-pointer prime, because the next prime (53781407) can be obtained adding 53781367 to its sum of digits (40).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53781367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53781307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26890683 + 26890684.

It is an arithmetic number, because the mean of its divisors is an integer number (26890684).

Almost surely, 2^53781367 is an apocalyptic number.

53781367 is a deficient number, since it is larger than the sum of its proper divisors (1).

53781367 is an equidigital number, since it uses as much as digits as its factorization.

53781367 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 105840, while the sum is 40.

The square root of 53781367 is about 7333.5780489472. The cubic root of 53781367 is about 377.4655132743.

The spelling of 53781367 in words is "fifty-three million, seven hundred eighty-one thousand, three hundred sixty-seven".