52161722 has 8 divisors (see below), whose sum is σ = 78278400. Its totient is φ = 26068924.

The previous prime is 52161721. The next prime is 52161727. The reversal of 52161722 is 22716125.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nialpdrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 52161691 and 52161700.

It is not an unprimeable number, because it can be changed into a prime (52161721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1229 + ... + 10287.

It is an arithmetic number, because the mean of its divisors is an integer number (9784800).

Almost surely, 2^52161722 is an apocalyptic number.

52161722 is a deficient number, since it is larger than the sum of its proper divisors (26116678).

52161722 is a wasteful number, since it uses less digits than its factorization.

52161722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11940.

The product of its digits is 1680, while the sum is 26.

The square root of 52161722 is about 7222.3072490721. The cubic root of 52161722 is about 373.6376570140.

Adding to 52161722 its reverse (22716125), we get a palindrome (74877847).

The spelling of 52161722 in words is "fifty-two million, one hundred sixty-one thousand, seven hundred twenty-two".