81883051 has 8 divisors (see below), whose sum is σ = 83913984. Its totient is φ = 79857960.

The previous prime is 81883031. The next prime is 81883057. The reversal of 81883051 is 15038818.

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 81883051 - 2⁹ = 81882539 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 81882998 and 81883016.

It is not an unprimeable number, because it can be changed into a prime (81883057) 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, 43410 + ... + 45256.

It is an arithmetic number, because the mean of its divisors is an integer number (10489248).

Almost surely, 2^81883051 is an apocalyptic number.

81883051 is a deficient number, since it is larger than the sum of its proper divisors (2030933).

81883051 is a wasteful number, since it uses less digits than its factorization.

81883051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2921.

The product of its (nonzero) digits is 7680, while the sum is 34.

The square root of 81883051 is about 9048.9254058148. The cubic root of 81883051 is about 434.2415126010.

The spelling of 81883051 in words is "eighty-one million, eight hundred eighty-three thousand, fifty-one".