52149380 has 12 divisors (see below), whose sum is σ = 109513740. Its totient is φ = 20859744.

The previous prime is 52149359. The next prime is 52149389. The reversal of 52149380 is 8394125.

52149380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 16532356 + 35617024 = 4066^2 + 5968^2 .

It is not an unprimeable number, because it can be changed into a prime (52149389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1303715 + ... + 1303754.

It is an arithmetic number, because the mean of its divisors is an integer number (9126145).

Almost surely, 2^52149380 is an apocalyptic number.

It is an amenable number.

52149380 is an abundant number, since it is smaller than the sum of its proper divisors (57364360).

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

52149380 is a wasteful number, since it uses less digits than its factorization.

52149380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2607478 (or 2607476 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 52149380 is about 7221.4527624295. The cubic root of 52149380 is about 373.6081858517.

The spelling of 52149380 in words is "fifty-two million, one hundred forty-nine thousand, three hundred eighty".