52120161 has 24 divisors (see below), whose sum is σ = 77733864. Its totient is φ = 33626880.

The previous prime is 52120121. The next prime is 52120183. The reversal of 52120161 is 16102125.

It can be written as a sum of positive squares in 4 ways, for example, as 10595025 + 41525136 = 3255^2 + 6444^2 .

It is not a de Polignac number, because 52120161 - 2¹¹ = 52118113 is a prime.

It is a super-2 number, since 2×52120161² = 5433022365331842, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (52120111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 93295 + ... + 93851.

It is an arithmetic number, because the mean of its divisors is an integer number (3238911).

Almost surely, 2^52120161 is an apocalyptic number.

It is an amenable number.

52120161 is a deficient number, since it is larger than the sum of its proper divisors (25613703).

52120161 is a wasteful number, since it uses less digits than its factorization.

52120161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881 (or 878 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 52120161 is about 7219.4294095863. The cubic root of 52120161 is about 373.5383959710.

Adding to 52120161 its reverse (16102125), we get a palindrome (68222286).

The spelling of 52120161 in words is "fifty-two million, one hundred twenty thousand, one hundred sixty-one".