71430555 has 16 divisors (see below), whose sum is σ = 130616064. Its totient is φ = 32653920.

The previous prime is 71430539. The next prime is 71430559. The reversal of 71430555 is 55503417.

It is not a de Polignac number, because 71430555 - 2⁴ = 71430539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71430559) 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 in 15 ways as a sum of consecutive naturals, for example, 340041 + ... + 340250.

It is an arithmetic number, because the mean of its divisors is an integer number (8163504).

Almost surely, 2^71430555 is an apocalyptic number.

71430555 is a deficient number, since it is larger than the sum of its proper divisors (59185509).

71430555 is a wasteful number, since it uses less digits than its factorization.

71430555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680306.

The product of its (nonzero) digits is 10500, while the sum is 30.

The square root of 71430555 is about 8451.6598961387. The cubic root of 71430555 is about 414.9171073614.

The spelling of 71430555 in words is "seventy-one million, four hundred thirty thousand, five hundred fifty-five".