52245281 has 4 divisors (see below), whose sum is σ = 56994864. Its totient is φ = 47495700.

The previous prime is 52245257. The next prime is 52245283. The reversal of 52245281 is 18254225.

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 52245281 - 2⁶ = 52245217 is a prime.

It is a super-2 number, since 2×52245281² = 5459138773537922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (52245283) 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, 2374775 + ... + 2374796.

It is an arithmetic number, because the mean of its divisors is an integer number (14248716).

Almost surely, 2^52245281 is an apocalyptic number.

52245281 is the 3233-rd centered decagonal number.

It is an amenable number.

52245281 is a deficient number, since it is larger than the sum of its proper divisors (4749583).

52245281 is a wasteful number, since it uses less digits than its factorization.

52245281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4749582.

The product of its digits is 6400, while the sum is 29.

The square root of 52245281 is about 7228.0897199744. The cubic root of 52245281 is about 373.8370633444.

The spelling of 52245281 in words is "fifty-two million, two hundred forty-five thousand, two hundred eighty-one".