52649980 has 12 divisors (see below), whose sum is σ = 110565000. Its totient is φ = 21059984.

The previous prime is 52649959. The next prime is 52649981. The reversal of 52649980 is 8994625.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52649981) 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 3 ways as a sum of consecutive naturals, for example, 1316230 + ... + 1316269.

It is an arithmetic number, because the mean of its divisors is an integer number (9213750).

Almost surely, 2^52649980 is an apocalyptic number.

It is an amenable number.

52649980 is an abundant number, since it is smaller than the sum of its proper divisors (57915020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52649980 is a wasteful number, since it uses less digits than its factorization.

52649980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2632508 (or 2632506 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 52649980 is about 7256.0305953048. The cubic root of 52649980 is about 374.7998457804.

The spelling of 52649980 in words is "fifty-two million, six hundred forty-nine thousand, nine hundred eighty".