71552530 has 16 divisors (see below), whose sum is σ = 147193920. Its totient is φ = 24532272.

The previous prime is 71552527. The next prime is 71552539. The reversal of 71552530 is 3525517.

It is not an unprimeable number, because it can be changed into a prime (71552539) 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 7 ways as a sum of consecutive naturals, for example, 511020 + ... + 511159.

It is an arithmetic number, because the mean of its divisors is an integer number (9199620).

Almost surely, 2^71552530 is an apocalyptic number.

71552530 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

71552530 is an abundant number, since it is smaller than the sum of its proper divisors (75641390).

71552530 is a wasteful number, since it uses less digits than its factorization.

71552530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022193.

The product of its (nonzero) digits is 5250, while the sum is 28.

The square root of 71552530 is about 8458.8728563562. The cubic root of 71552530 is about 415.1531442342.

The spelling of 71552530 in words is "seventy-one million, five hundred fifty-two thousand, five hundred thirty".