71481039 has 16 divisors (see below), whose sum is σ = 115331328. Its totient is φ = 38443392.

The previous prime is 71481023. The next prime is 71481043. The reversal of 71481039 is 93018417.

It is not a de Polignac number, because 71481039 - 2⁴ = 71481023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71481019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99757 + ... + 100470.

It is an arithmetic number, because the mean of its divisors is an integer number (7208208).

Almost surely, 2^71481039 is an apocalyptic number.

71481039 is a deficient number, since it is larger than the sum of its proper divisors (43850289).

71481039 is a wasteful number, since it uses less digits than its factorization.

71481039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200254.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 71481039 is about 8454.6460008684. The cubic root of 71481039 is about 415.0148327790.

The spelling of 71481039 in words is "seventy-one million, four hundred eighty-one thousand, thirty-nine".