71452512 has 36 divisors (see below), whose sum is σ = 203193900. Its totient is φ = 23817408.

The previous prime is 71452501. The next prime is 71452519. The reversal of 71452512 is 21525417.

71452512 is a `hidden beast` number, since 7 + 145 + 2 + 512 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×71452512² = 10210922942220288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71452519) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 123762 + ... + 124337.

It is an arithmetic number, because the mean of its divisors is an integer number (5644275).

Almost surely, 2^71452512 is an apocalyptic number.

71452512 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

71452512 is an abundant number, since it is smaller than the sum of its proper divisors (131741388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71452512 is a wasteful number, since it uses less digits than its factorization.

71452512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248115 (or 248104 counting only the distinct ones).

The product of its digits is 2800, while the sum is 27.

The square root of 71452512 is about 8452.9587719331. The cubic root of 71452512 is about 414.9596167217.

Adding to 71452512 its reverse (21525417), we get a palindrome (92977929).

The spelling of 71452512 in words is "seventy-one million, four hundred fifty-two thousand, five hundred twelve".