71532542 has 4 divisors (see below), whose sum is σ = 107298816. Its totient is φ = 35766270.

The previous prime is 71532541. The next prime is 71532547. The reversal of 71532542 is 24523517.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24523517 = 1039 ⋅23603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71532541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17883134 + ... + 17883137.

It is an arithmetic number, because the mean of its divisors is an integer number (26824704).

Almost surely, 2^71532542 is an apocalyptic number.

71532542 is a deficient number, since it is larger than the sum of its proper divisors (35766274).

71532542 is a wasteful number, since it uses less digits than its factorization.

71532542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35766273.

The product of its digits is 8400, while the sum is 29.

The square root of 71532542 is about 8457.6912925455. The cubic root of 71532542 is about 415.1144833425.

The spelling of 71532542 in words is "seventy-one million, five hundred thirty-two thousand, five hundred forty-two".