71501452 has 24 divisors (see below), whose sum is σ = 139082832. Its totient is φ = 31886400.

The previous prime is 71501449. The next prime is 71501459. The reversal of 71501452 is 25410517.

It is a super-2 number, since 2×71501452² = 10224915276216608, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71501459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12999 + ... + 17662.

It is an arithmetic number, because the mean of its divisors is an integer number (5795118).

Almost surely, 2^71501452 is an apocalyptic number.

It is an amenable number.

71501452 is a deficient number, since it is larger than the sum of its proper divisors (67581380).

71501452 is a wasteful number, since it uses less digits than its factorization.

71501452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30729 (or 30727 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 71501452 is about 8455.8531207679. The cubic root of 71501452 is about 415.0543345900.

Adding to 71501452 its reverse (25410517), we get a palindrome (96911969).

The spelling of 71501452 in words is "seventy-one million, five hundred one thousand, four hundred fifty-two".