71487045 has 24 divisors (see below), whose sum is σ = 141613056. Its totient is φ = 32679648.

The previous prime is 71487043. The next prime is 71487049. The reversal of 71487045 is 54078417.

It is not a de Polignac number, because 71487045 - 2¹ = 71487043 is a prime.

It is a super-2 number, since 2×71487045² = 10220795205664050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71487041) 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 23 ways as a sum of consecutive naturals, for example, 113157 + ... + 113786.

It is an arithmetic number, because the mean of its divisors is an integer number (5900544).

Almost surely, 2^71487045 is an apocalyptic number.

It is an amenable number.

71487045 is a deficient number, since it is larger than the sum of its proper divisors (70126011).

71487045 is a wasteful number, since it uses less digits than its factorization.

71487045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226961 (or 226958 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 36.

The square root of 71487045 is about 8455.0011827320. The cubic root of 71487045 is about 415.0264559512.

The spelling of 71487045 in words is "seventy-one million, four hundred eighty-seven thousand, forty-five".