81052630 has 16 divisors (see below), whose sum is σ = 147894624. Its totient is φ = 31976640.

The previous prime is 81052619. The next prime is 81052633. The reversal of 81052630 is 3625018.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 81052595 and 81052604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81052633) 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, 54786 + ... + 56245.

It is an arithmetic number, because the mean of its divisors is an integer number (9243414).

Almost surely, 2^81052630 is an apocalyptic number.

81052630 is a deficient number, since it is larger than the sum of its proper divisors (66841994).

81052630 is a wasteful number, since it uses less digits than its factorization.

81052630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111111.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 81052630 is about 9002.9234140917. The cubic root of 81052630 is about 432.7685614143.

Adding to 81052630 its reverse (3625018), we get a palindrome (84677648).

The spelling of 81052630 in words is "eighty-one million, fifty-two thousand, six hundred thirty".