81050037 has 4 divisors (see below), whose sum is σ = 108066720. Its totient is φ = 54033356.

The previous prime is 81049993. The next prime is 81050051. The reversal of 81050037 is 73005018.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 81050037 - 2⁶ = 81049973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 81049989 and 81050016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81050087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13508337 + ... + 13508342.

It is an arithmetic number, because the mean of its divisors is an integer number (27016680).

Almost surely, 2^81050037 is an apocalyptic number.

It is an amenable number.

81050037 is a deficient number, since it is larger than the sum of its proper divisors (27016683).

81050037 is a wasteful number, since it uses less digits than its factorization.

81050037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27016682.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 81050037 is about 9002.7794041618. The cubic root of 81050037 is about 432.7639463847.

The spelling of 81050037 in words is "eighty-one million, fifty thousand, thirty-seven".