71576421 has 16 divisors (see below), whose sum is σ = 109198464. Its totient is φ = 40852224.

The previous prime is 71576419. The next prime is 71576423. The reversal of 71576421 is 12467517.

It is an interprime number because it is at equal distance from previous prime (71576419) and next prime (71576423).

It is not a de Polignac number, because 71576421 - 2¹ = 71576419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71576423) 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 15 ways as a sum of consecutive naturals, for example, 23625 + ... + 26481.

It is an arithmetic number, because the mean of its divisors is an integer number (6824904).

Almost surely, 2^71576421 is an apocalyptic number.

It is an amenable number.

71576421 is a deficient number, since it is larger than the sum of its proper divisors (37622043).

71576421 is a wasteful number, since it uses less digits than its factorization.

71576421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4060.

The product of its digits is 11760, while the sum is 33.

The square root of 71576421 is about 8460.2849242800. The cubic root of 71576421 is about 415.1993448837.

The spelling of 71576421 in words is "seventy-one million, five hundred seventy-six thousand, four hundred twenty-one".