52121210 has 16 divisors (see below), whose sum is σ = 93919392. Its totient is φ = 20826000.

The previous prime is 52121191. The next prime is 52121213. The reversal of 52121210 is 1212125.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (52121213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9485 + ... + 13935.

It is an arithmetic number, because the mean of its divisors is an integer number (5869962).

Almost surely, 2^52121210 is an apocalyptic number.

52121210 is a deficient number, since it is larger than the sum of its proper divisors (41798182).

52121210 is a wasteful number, since it uses less digits than its factorization.

52121210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5629.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 52121210 is about 7219.5020603917. The cubic root of 52121210 is about 373.5409019696.

Adding to 52121210 its reverse (1212125), we get a palindrome (53333335).

The spelling of 52121210 in words is "fifty-two million, one hundred twenty-one thousand, two hundred ten".