71541923 has 4 divisors (see below), whose sum is σ = 71635248. Its totient is φ = 71448600.

The previous prime is 71541913. The next prime is 71541931. The reversal of 71541923 is 32914517.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32914517 = 19 ⋅1732343.

It is a cyclic number.

It is not a de Polignac number, because 71541923 - 2⁸ = 71541667 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71541923.

It is not an unprimeable number, because it can be changed into a prime (71541913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45503 + ... + 47048.

It is an arithmetic number, because the mean of its divisors is an integer number (17908812).

Almost surely, 2^71541923 is an apocalyptic number.

71541923 is a deficient number, since it is larger than the sum of its proper divisors (93325).

71541923 is an equidigital number, since it uses as much as digits as its factorization.

71541923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93324.

The product of its digits is 7560, while the sum is 32.

The square root of 71541923 is about 8458.2458583326. The cubic root of 71541923 is about 415.1326290174.

The spelling of 71541923 in words is "seventy-one million, five hundred forty-one thousand, nine hundred twenty-three".