52112021571 has 20 divisors (see below), whose sum is σ = 78602155632. Its totient is φ = 34404047568.

The previous prime is 52112021567. The next prime is 52112021581. The reversal of 52112021571 is 17512021125.

52112021571 is a `hidden beast` number, since 52 + 1 + 1 + 20 + 21 + 571 = 666.

It is not a de Polignac number, because 52112021571 - 2² = 52112021567 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (52112021581) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3114756 + ... + 3131441.

Almost surely, 2^52112021571 is an apocalyptic number.

52112021571 is a deficient number, since it is larger than the sum of its proper divisors (26490134061).

52112021571 is a wasteful number, since it uses less digits than its factorization.

52112021571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6246312 (or 6246303 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 27.

Adding to 52112021571 its reverse (17512021125), we get a palindrome (69624042696).

The spelling of 52112021571 in words is "fifty-two billion, one hundred twelve million, twenty-one thousand, five hundred seventy-one".