81052528 has 10 divisors (see below), whose sum is σ = 157039304. Its totient is φ = 40526256.

The previous prime is 81052523. The next prime is 81052547. The reversal of 81052528 is 82525018.

It is a self number, because there is not a number n which added to its sum of digits gives 81052528.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81052523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2532876 + ... + 2532907.

Almost surely, 2^81052528 is an apocalyptic number.

It is an amenable number.

81052528 is a deficient number, since it is larger than the sum of its proper divisors (75986776).

81052528 is a wasteful number, since it uses less digits than its factorization.

81052528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5065791 (or 5065785 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 31.

The square root of 81052528 is about 9002.9177492633. The cubic root of 81052528 is about 432.7683798762.

The spelling of 81052528 in words is "eighty-one million, fifty-two thousand, five hundred twenty-eight".