53022021156 has 144 divisors (see below), whose sum is σ = 147453493824. Its totient is φ = 15966021888.

The previous prime is 53022021139. The next prime is 53022021209. The reversal of 53022021156 is 65112022035.

It is a happy number.

53022021156 is a `hidden beast` number, since 5 + 302 + 202 + 1 + 156 = 666.

It is a super-2 number, since 2×53022021156² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4149930 + ... + 4162686.

It is an arithmetic number, because the mean of its divisors is an integer number (1023982596).

Almost surely, 2^53022021156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53022021156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73726746912).

53022021156 is an abundant number, since it is smaller than the sum of its proper divisors (94431472668).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53022021156 is a wasteful number, since it uses less digits than its factorization.

53022021156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12970 (or 12965 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The spelling of 53022021156 in words is "fifty-three billion, twenty-two million, twenty-one thousand, one hundred fifty-six".