81353041 has 32 divisors (see below), whose sum is σ = 113080320. Its totient is φ = 56505600.

The previous prime is 81353029. The next prime is 81353053. The reversal of 81353041 is 14035318.

81353041 = T₂₇₇₃ + T₂₇₇₄ + ... + T₂₇₉₃.

It is an interprime number because it is at equal distance from previous prime (81353029) and next prime (81353053).

It is a cyclic number.

It is not a de Polignac number, because 81353041 - 2¹⁵ = 81320273 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 81352997 and 81353015.

It is not an unprimeable number, because it can be changed into a prime (81353011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23236 + ... + 26506.

It is an arithmetic number, because the mean of its divisors is an integer number (3533760).

Almost surely, 2^81353041 is an apocalyptic number.

It is an amenable number.

81353041 is a deficient number, since it is larger than the sum of its proper divisors (31727279).

81353041 is a wasteful number, since it uses less digits than its factorization.

81353041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3325.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 81353041 is about 9019.5920639461. The cubic root of 81353041 is about 433.3025689534.

Adding to 81353041 its reverse (14035318), we get a palindrome (95388359).

The spelling of 81353041 in words is "eighty-one million, three hundred fifty-three thousand, forty-one".