71438553 has 12 divisors (see below), whose sum is σ = 103874368. Its totient is φ = 47309400.

The previous prime is 71438533. The next prime is 71438561. The reversal of 71438553 is 35583417.

71438553 is a `hidden beast` number, since 71 + 4 + 38 + 553 = 666.

It is not a de Polignac number, because 71438553 - 2¹⁶ = 71373017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (71438533) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24925 + ... + 27642.

Almost surely, 2^71438553 is an apocalyptic number.

It is an amenable number.

71438553 is a deficient number, since it is larger than the sum of its proper divisors (32435815).

71438553 is a wasteful number, since it uses less digits than its factorization.

71438553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52724 (or 52721 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 71438553 is about 8452.1330443859. The cubic root of 71438553 is about 414.9325927195.

The spelling of 71438553 in words is "seventy-one million, four hundred thirty-eight thousand, five hundred fifty-three".