52142222 has 16 divisors (see below), whose sum is σ = 85449600. Its totient is φ = 23666040.

The previous prime is 52142197. The next prime is 52142239. The reversal of 52142222 is 22224125.

It is a super-2 number, since 2×52142222² = 5437622630194568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 52142194 and 52142203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18929 + ... + 21507.

It is an arithmetic number, because the mean of its divisors is an integer number (5340600).

Almost surely, 2^52142222 is an apocalyptic number.

52142222 is a deficient number, since it is larger than the sum of its proper divisors (33307378).

52142222 is a wasteful number, since it uses less digits than its factorization.

52142222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3511.

The product of its digits is 640, while the sum is 20.

The square root of 52142222 is about 7220.9571387732. The cubic root of 52142222 is about 373.5910913068.

Adding to 52142222 its reverse (22224125), we get a palindrome (74366347).

The spelling of 52142222 in words is "fifty-two million, one hundred forty-two thousand, two hundred twenty-two".