81227053 has 8 divisors (see below), whose sum is σ = 85954176. Its totient is φ = 76599600.

The previous prime is 81227039. The next prime is 81227077. The reversal of 81227053 is 35072218.

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

It is a cyclic number.

It is not a de Polignac number, because 81227053 - 2⁵ = 81227021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81227093) 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, 23238 + ... + 26503.

It is an arithmetic number, because the mean of its divisors is an integer number (10744272).

Almost surely, 2^81227053 is an apocalyptic number.

It is an amenable number.

81227053 is a deficient number, since it is larger than the sum of its proper divisors (4727123).

81227053 is a wasteful number, since it uses less digits than its factorization.

81227053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49835.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 81227053 is about 9012.6052282345. The cubic root of 81227053 is about 433.0787742902.

The spelling of 81227053 in words is "eighty-one million, two hundred twenty-seven thousand, fifty-three".