53252251 has 4 divisors (see below), whose sum is σ = 57348592. Its totient is φ = 49155912.

The previous prime is 53252249. The next prime is 53252257. The reversal of 53252251 is 15225235.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15225235 = 5 ⋅3045047.

It is not a de Polignac number, because 53252251 - 2¹ = 53252249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53252257) 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, 2048151 + ... + 2048176.

It is an arithmetic number, because the mean of its divisors is an integer number (14337148).

Almost surely, 2^53252251 is an apocalyptic number.

53252251 is a deficient number, since it is larger than the sum of its proper divisors (4096341).

53252251 is a wasteful number, since it uses less digits than its factorization.

53252251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4096340.

The product of its digits is 3000, while the sum is 25.

The square root of 53252251 is about 7297.4139940119. The cubic root of 53252251 is about 376.2235613111.

Adding to 53252251 its reverse (15225235), we get a palindrome (68477486).

The spelling of 53252251 in words is "fifty-three million, two hundred fifty-two thousand, two hundred fifty-one".