52251533 has 4 divisors (see below), whose sum is σ = 54053340. Its totient is φ = 50449728.

The previous prime is 52251517. The next prime is 52251559. The reversal of 52251533 is 33515225.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25180324 + 27071209 = 5018^2 + 5203^2 .

It is a cyclic number.

It is not a de Polignac number, because 52251533 - 2⁴ = 52251517 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52254533) 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, 900860 + ... + 900917.

It is an arithmetic number, because the mean of its divisors is an integer number (13513335).

Almost surely, 2^52251533 is an apocalyptic number.

It is an amenable number.

52251533 is a deficient number, since it is larger than the sum of its proper divisors (1801807).

52251533 is a wasteful number, since it uses less digits than its factorization.

52251533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1801806.

The product of its digits is 4500, while the sum is 26.

The square root of 52251533 is about 7228.5221864500. The cubic root of 52251533 is about 373.8519746503.

Adding to 52251533 its reverse (33515225), we get a palindrome (85766758).

The spelling of 52251533 in words is "fifty-two million, two hundred fifty-one thousand, five hundred thirty-three".