75161971 has 2 divisors, whose sum is σ = 75161972. Its totient is φ = 75161970.

The previous prime is 75161969. The next prime is 75161987. The reversal of 75161971 is 17916157.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 75161971 - 2¹ = 75161969 is a prime.

Together with 75161969, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 75161971.

It is not a weakly prime, because it can be changed into another prime (75161941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37580985 + 37580986.

It is an arithmetic number, because the mean of its divisors is an integer number (37580986).

Almost surely, 2^75161971 is an apocalyptic number.

75161971 is a deficient number, since it is larger than the sum of its proper divisors (1).

75161971 is an equidigital number, since it uses as much as digits as its factorization.

75161971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13230, while the sum is 37.

The square root of 75161971 is about 8669.6003944819. The cubic root of 75161971 is about 422.0196957782.

The spelling of 75161971 in words is "seventy-five million, one hundred sixty-one thousand, nine hundred seventy-one".