81053363 has 2 divisors, whose sum is σ = 81053364. Its totient is φ = 81053362.

The previous prime is 81053341. The next prime is 81053383. The reversal of 81053363 is 36335018.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 81053363 - 2¹⁰ = 81052339 is a prime.

It is not a weakly prime, because it can be changed into another prime (81053383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40526681 + 40526682.

It is an arithmetic number, because the mean of its divisors is an integer number (40526682).

Almost surely, 2^81053363 is an apocalyptic number.

81053363 is a deficient number, since it is larger than the sum of its proper divisors (1).

81053363 is an equidigital number, since it uses as much as digits as its factorization.

81053363 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 29.

The square root of 81053363 is about 9002.9641229986. The cubic root of 81053363 is about 432.7698659921.

The spelling of 81053363 in words is "eighty-one million, fifty-three thousand, three hundred sixty-three".