71046551 has 2 divisors, whose sum is σ = 71046552. Its totient is φ = 71046550.

The previous prime is 71046541. The next prime is 71046611. The reversal of 71046551 is 15564017.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71046551 - 2⁶ = 71046487 is a prime.

It is a super-2 number, since 2×71046551² = 10095224817991202, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71046511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35523275 + 35523276.

It is an arithmetic number, because the mean of its divisors is an integer number (35523276).

Almost surely, 2^71046551 is an apocalyptic number.

71046551 is a deficient number, since it is larger than the sum of its proper divisors (1).

71046551 is an equidigital number, since it uses as much as digits as its factorization.

71046551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 71046551 is about 8428.9116142003. The cubic root of 71046551 is about 414.1722524517.

The spelling of 71046551 in words is "seventy-one million, forty-six thousand, five hundred fifty-one".