52161001 has 4 divisors (see below), whose sum is σ = 52536400. Its totient is φ = 51785604.

The previous prime is 52160989. The next prime is 52161017. The reversal of 52161001 is 10016125.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 52161001 - 2¹³ = 52152809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52161301) 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, 187491 + ... + 187768.

It is an arithmetic number, because the mean of its divisors is an integer number (13134100).

Almost surely, 2^52161001 is an apocalyptic number.

It is an amenable number.

52161001 is a deficient number, since it is larger than the sum of its proper divisors (375399).

52161001 is a wasteful number, since it uses less digits than its factorization.

52161001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375398.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 52161001 is about 7222.2573341027. The cubic root of 52161001 is about 373.6359354834.

Adding to 52161001 its reverse (10016125), we get a palindrome (62177126).

The spelling of 52161001 in words is "fifty-two million, one hundred sixty-one thousand, one".