52220402 has 8 divisors (see below), whose sum is σ = 84356076. Its totient is φ = 24101712.

The previous prime is 52220383. The next prime is 52220411. The reversal of 52220402 is 20402225.

It can be written as a sum of positive squares in 2 ways, for example, as 42367081 + 9853321 = 6509^2 + 3139^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1004213 + ... + 1004264.

Almost surely, 2^52220402 is an apocalyptic number.

52220402 is a deficient number, since it is larger than the sum of its proper divisors (32135674).

52220402 is a wasteful number, since it uses less digits than its factorization.

52220402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2008492.

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 52220402 is about 7226.3685209101. The cubic root of 52220402 is about 373.7777140033. Note that the first 4 decimals are identical.

Adding to 52220402 its reverse (20402225), we get a palindrome (72622627).

The spelling of 52220402 in words is "fifty-two million, two hundred twenty thousand, four hundred two".