81058053 has 8 divisors (see below), whose sum is σ = 110591008. Its totient is φ = 52781904.

The previous prime is 81057979. The next prime is 81058063. The reversal of 81058053 is 35085018.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 81058053 - 2⁸ = 81057797 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 81058053.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81058063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 314050 + ... + 314307.

It is an arithmetic number, because the mean of its divisors is an integer number (13823876).

Almost surely, 2^81058053 is an apocalyptic number.

It is an amenable number.

81058053 is a deficient number, since it is larger than the sum of its proper divisors (29532955).

81058053 is a wasteful number, since it uses less digits than its factorization.

81058053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628403.

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 81058053 is about 9003.2245890014. The cubic root of 81058053 is about 432.7782129685.

The spelling of 81058053 in words is "eighty-one million, fifty-eight thousand, fifty-three".