52311281 has 4 divisors (see below), whose sum is σ = 57066864. Its totient is φ = 47555700.

The previous prime is 52311277. The next prime is 52311283. The reversal of 52311281 is 18211325.

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 52311281 - 2² = 52311277 is a prime.

It is a super-2 number, since 2×52311281² = 5472940239721922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52311283) 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, 2377775 + ... + 2377796.

It is an arithmetic number, because the mean of its divisors is an integer number (14266716).

Almost surely, 2^52311281 is an apocalyptic number.

It is an amenable number.

52311281 is a deficient number, since it is larger than the sum of its proper divisors (4755583).

52311281 is a wasteful number, since it uses less digits than its factorization.

52311281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4755582.

The product of its digits is 480, while the sum is 23.

The square root of 52311281 is about 7232.6538006461. The cubic root of 52311281 is about 373.9944163998.

The spelling of 52311281 in words is "fifty-two million, three hundred eleven thousand, two hundred eighty-one".