52780030 has 16 divisors (see below), whose sum is σ = 95187600. Its totient is φ = 21071232.

The previous prime is 52780001. The next prime is 52780037. The reversal of 52780030 is 3008725.

It is a junction number, because it is equal to n+sod(n) for n = 52779977 and 52780004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52780037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 646 + ... + 10294.

It is an arithmetic number, because the mean of its divisors is an integer number (5949225).

Almost surely, 2^52780030 is an apocalyptic number.

52780030 is a deficient number, since it is larger than the sum of its proper divisors (42407570).

52780030 is a wasteful number, since it uses less digits than its factorization.

52780030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10203.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 52780030 is about 7264.9865794783. The cubic root of 52780030 is about 375.1081880439.

Adding to 52780030 its reverse (3008725), we get a palindrome (55788755).

The spelling of 52780030 in words is "fifty-two million, seven hundred eighty thousand, thirty".