52105990 has 16 divisors (see below), whose sum is σ = 96326352. Its totient is φ = 20278944.

The previous prime is 52105931. The next prime is 52105997. The reversal of 52105990 is 9950125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52105997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70044 + ... + 70783.

It is an arithmetic number, because the mean of its divisors is an integer number (6020397).

Almost surely, 2^52105990 is an apocalyptic number.

52105990 is a deficient number, since it is larger than the sum of its proper divisors (44220362).

52105990 is a wasteful number, since it uses less digits than its factorization.

52105990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140871.

The product of its (nonzero) digits is 4050, while the sum is 31.

The square root of 52105990 is about 7218.4478941113. The cubic root of 52105990 is about 373.5045389995.

The spelling of 52105990 in words is "fifty-two million, one hundred five thousand, nine hundred ninety".