71992051 has 2 divisors, whose sum is σ = 71992052. Its totient is φ = 71992050.

The previous prime is 71992043. The next prime is 71992079. The reversal of 71992051 is 15029917.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71992051 - 2³ = 71992043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71991998 and 71992016.

It is not a weakly prime, because it can be changed into another prime (71998051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35996025 + 35996026.

It is an arithmetic number, because the mean of its divisors is an integer number (35996026).

Almost surely, 2^71992051 is an apocalyptic number.

71992051 is a deficient number, since it is larger than the sum of its proper divisors (1).

71992051 is an equidigital number, since it uses as much as digits as its factorization.

71992051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5670, while the sum is 34.

The square root of 71992051 is about 8484.8129619927. The cubic root of 71992051 is about 416.0014542448.

The spelling of 71992051 in words is "seventy-one million, nine hundred ninety-two thousand, fifty-one".