71845154 has 4 divisors (see below), whose sum is σ = 107767734. Its totient is φ = 35922576.

The previous prime is 71845139. The next prime is 71845159. The reversal of 71845154 is 45154817.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 47293129 + 24552025 = 6877^2 + 4955^2 .

It is not an unprimeable number, because it can be changed into a prime (71845159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17961287 + ... + 17961290.

Almost surely, 2^71845154 is an apocalyptic number.

71845154 is a deficient number, since it is larger than the sum of its proper divisors (35922580).

71845154 is a wasteful number, since it uses less digits than its factorization.

71845154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35922579.

The product of its digits is 22400, while the sum is 35.

The square root of 71845154 is about 8476.1520750869. The cubic root of 71845154 is about 415.7183166126.

The spelling of 71845154 in words is "seventy-one million, eight hundred forty-five thousand, one hundred fifty-four".