53222815642 has 4 divisors (see below), whose sum is σ = 79834223466. Its totient is φ = 26611407820.

The previous prime is 53222815627. The next prime is 53222815643. The reversal of 53222815642 is 24651822235.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 46937655801 + 6285159841 = 216651^2 + 79279^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 53222815595 and 53222815604.

It is not an unprimeable number, because it can be changed into a prime (53222815643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13305703909 + ... + 13305703912.

Almost surely, 2^53222815642 is an apocalyptic number.

53222815642 is a deficient number, since it is larger than the sum of its proper divisors (26611407824).

53222815642 is a wasteful number, since it uses less digits than its factorization.

53222815642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26611407823.

The product of its digits is 230400, while the sum is 40.

The spelling of 53222815642 in words is "fifty-three billion, two hundred twenty-two million, eight hundred fifteen thousand, six hundred forty-two".