52167281 has 4 divisors (see below), whose sum is σ = 52303872. Its totient is φ = 52030692.

The previous prime is 52167239. The next prime is 52167307. The reversal of 52167281 is 18276125.

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 52167281 - 2¹⁸ = 51905137 is a prime.

It is a super-2 number, since 2×52167281² = 5442850413865922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52167881) 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, 67721 + ... + 68486.

It is an arithmetic number, because the mean of its divisors is an integer number (13075968).

Almost surely, 2^52167281 is an apocalyptic number.

It is an amenable number.

52167281 is a deficient number, since it is larger than the sum of its proper divisors (136591).

52167281 is a wasteful number, since it uses less digits than its factorization.

52167281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136590.

The product of its digits is 6720, while the sum is 32.

The square root of 52167281 is about 7222.6920881345. The cubic root of 52167281 is about 373.6509296967.

The spelling of 52167281 in words is "fifty-two million, one hundred sixty-seven thousand, two hundred eighty-one".