71650051 has 8 divisors (see below), whose sum is σ = 79445808. Its totient is φ = 64068000.

The previous prime is 71650027. The next prime is 71650069. The reversal of 71650051 is 15005617.

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 71650051 - 2¹⁹ = 71125763 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71649998 and 71650025.

It is not an unprimeable number, because it can be changed into a prime (71650091) 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, 52720 + ... + 54061.

It is an arithmetic number, because the mean of its divisors is an integer number (9930726).

Almost surely, 2^71650051 is an apocalyptic number.

71650051 is the 3786-th centered decagonal number.

71650051 is a deficient number, since it is larger than the sum of its proper divisors (7795757).

71650051 is a wasteful number, since it uses less digits than its factorization.

71650051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106853.

The product of its (nonzero) digits is 1050, while the sum is 25.

The square root of 71650051 is about 8464.6353140581. The cubic root of 71650051 is about 415.3416666641.

Adding to 71650051 its reverse (15005617), we get a palindrome (86655668).

The spelling of 71650051 in words is "seventy-one million, six hundred fifty thousand, fifty-one".