52521870 has 32 divisors (see below), whose sum is σ = 129462048. Its totient is φ = 13627008.

The previous prime is 52521869. The next prime is 52521893. The reversal of 52521870 is 7812525.

52521870 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 22549 + ... + 24768.

It is an arithmetic number, because the mean of its divisors is an integer number (4045689).

Almost surely, 2^52521870 is an apocalyptic number.

52521870 is an abundant number, since it is smaller than the sum of its proper divisors (76940178).

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

52521870 is a wasteful number, since it uses less digits than its factorization.

52521870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47364.

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 52521870 is about 7247.1973893361. The cubic root of 52521870 is about 374.4956063140.

The spelling of 52521870 in words is "fifty-two million, five hundred twenty-one thousand, eight hundred seventy".