71145154 has 16 divisors (see below), whose sum is σ = 111405816. Its totient is φ = 34041600.

The previous prime is 71145121. The next prime is 71145163. The reversal of 71145154 is 45154117.

It can be written as a sum of positive squares in 4 ways, for example, as 60419529 + 10725625 = 7773^2 + 3275^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3367 + ... + 12394.

Almost surely, 2^71145154 is an apocalyptic number.

71145154 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

71145154 is a deficient number, since it is larger than the sum of its proper divisors (40260662).

71145154 is a wasteful number, since it uses less digits than its factorization.

71145154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15861.

The product of its digits is 2800, while the sum is 28.

The square root of 71145154 is about 8434.7586806025. The cubic root of 71145154 is about 414.3637688953.

The spelling of 71145154 in words is "seventy-one million, one hundred forty-five thousand, one hundred fifty-four".