52161804 has 36 divisors (see below), whose sum is σ = 133529760. Its totient is φ = 17166240.

The previous prime is 52161779. The next prime is 52161829. The reversal of 52161804 is 40816125.

52161804 is a `hidden beast` number, since 521 + 61 + 80 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (52161779) and next prime (52161829).

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6327 + ... + 12014.

It is an arithmetic number, because the mean of its divisors is an integer number (3709160).

Almost surely, 2^52161804 is an apocalyptic number.

It is an amenable number.

52161804 is an abundant number, since it is smaller than the sum of its proper divisors (81367956).

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

52161804 is a wasteful number, since it uses less digits than its factorization.

52161804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18430 (or 18425 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 52161804 is about 7222.3129259262. The cubic root of 52161804 is about 373.6378528042.

Adding to 52161804 its reverse (40816125), we get a palindrome (92977929).

The spelling of 52161804 in words is "fifty-two million, one hundred sixty-one thousand, eight hundred four".