71180461 has 4 divisors (see below), whose sum is σ = 77651424. Its totient is φ = 64709500.

The previous prime is 71180449. The next prime is 71180521. The reversal of 71180461 is 16408117.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 71180461 - 2¹¹ = 71178413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71180401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3235465 + ... + 3235486.

It is an arithmetic number, because the mean of its divisors is an integer number (19412856).

Almost surely, 2^71180461 is an apocalyptic number.

It is an amenable number.

71180461 is a deficient number, since it is larger than the sum of its proper divisors (6470963).

71180461 is a wasteful number, since it uses less digits than its factorization.

71180461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6470962.

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 71180461 is about 8436.8513676608. The cubic root of 71180461 is about 414.4323025963.

Adding to 71180461 its reverse (16408117), we get a palindrome (87588578).

The spelling of 71180461 in words is "seventy-one million, one hundred eighty thousand, four hundred sixty-one".