71284151 has 2 divisors, whose sum is σ = 71284152. Its totient is φ = 71284150.

The previous prime is 71284121. The next prime is 71284189. The reversal of 71284151 is 15148217.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71284151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71284121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35642075 + 35642076.

It is an arithmetic number, because the mean of its divisors is an integer number (35642076).

Almost surely, 2^71284151 is an apocalyptic number.

71284151 is a deficient number, since it is larger than the sum of its proper divisors (1).

71284151 is an equidigital number, since it uses as much as digits as its factorization.

71284151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2240, while the sum is 29.

The square root of 71284151 is about 8442.9941963737. The cubic root of 71284151 is about 414.6334422322.

The spelling of 71284151 in words is "seventy-one million, two hundred eighty-four thousand, one hundred fifty-one".