71953951 has 2 divisors, whose sum is σ = 71953952. Its totient is φ = 71953950.

The previous prime is 71953949. The next prime is 71953961. The reversal of 71953951 is 15935917.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71953951 - 2¹ = 71953949 is a prime.

Together with 71953949, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71953961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35976975 + 35976976.

It is an arithmetic number, because the mean of its divisors is an integer number (35976976).

Almost surely, 2^71953951 is an apocalyptic number.

71953951 is a deficient number, since it is larger than the sum of its proper divisors (1).

71953951 is an equidigital number, since it uses as much as digits as its factorization.

71953951 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42525, while the sum is 40.

The square root of 71953951 is about 8482.5674768905. The cubic root of 71953951 is about 415.9280551587.

The spelling of 71953951 in words is "seventy-one million, nine hundred fifty-three thousand, nine hundred fifty-one".