71225051 has 2 divisors, whose sum is σ = 71225052. Its totient is φ = 71225050.

The previous prime is 71225047. The next prime is 71225059. The reversal of 71225051 is 15052217.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (15052217) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71225051 - 2² = 71225047 is a prime.

It is not a weakly prime, because it can be changed into another prime (71225059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35612525 + 35612526.

It is an arithmetic number, because the mean of its divisors is an integer number (35612526).

Almost surely, 2^71225051 is an apocalyptic number.

71225051 is a deficient number, since it is larger than the sum of its proper divisors (1).

71225051 is an equidigital number, since it uses as much as digits as its factorization.

71225051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 700, while the sum is 23.

The square root of 71225051 is about 8439.4935274577. The cubic root of 71225051 is about 414.5188229639.

Adding to 71225051 its reverse (15052217), we get a palindrome (86277268).

The spelling of 71225051 in words is "seventy-one million, two hundred twenty-five thousand, fifty-one".