71457754 has 4 divisors (see below), whose sum is σ = 107186634. Its totient is φ = 35728876.

The previous prime is 71457731. The next prime is 71457761. The reversal of 71457754 is 45775417.

It is a happy number.

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., 52229529 + 19228225 = 7227^2 + 4385^2 .

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 as a sum of consecutive naturals, namely, 17864437 + ... + 17864440.

Almost surely, 2^71457754 is an apocalyptic number.

71457754 is a deficient number, since it is larger than the sum of its proper divisors (35728880).

71457754 is a wasteful number, since it uses less digits than its factorization.

71457754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35728879.

The product of its digits is 137200, while the sum is 40.

The square root of 71457754 is about 8453.2688351903. The cubic root of 71457754 is about 414.9697640912.

The spelling of 71457754 in words is "seventy-one million, four hundred fifty-seven thousand, seven hundred fifty-four".