71954731 has 4 divisors (see below), whose sum is σ = 72209272. Its totient is φ = 71700192.

The previous prime is 71954699. The next prime is 71954747. The reversal of 71954731 is 13745917.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13745917 = 241 ⋅57037.

It is a cyclic number.

It is not a de Polignac number, because 71954731 - 2⁵ = 71954699 is a prime.

It is a super-2 number, since 2×71954731² = 10354966626564722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71954431) 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 3 ways as a sum of consecutive naturals, for example, 126846 + ... + 127411.

It is an arithmetic number, because the mean of its divisors is an integer number (18052318).

Almost surely, 2^71954731 is an apocalyptic number.

71954731 is a deficient number, since it is larger than the sum of its proper divisors (254541).

71954731 is a wasteful number, since it uses less digits than its factorization.

71954731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254540.

The product of its digits is 26460, while the sum is 37.

The square root of 71954731 is about 8482.6134534116. The cubic root of 71954731 is about 415.9295580769.

The spelling of 71954731 in words is "seventy-one million, nine hundred fifty-four thousand, seven hundred thirty-one".