52640253 has 8 divisors (see below), whose sum is σ = 77985600. Its totient is φ = 35093484.

The previous prime is 52640221. The next prime is 52640293. The reversal of 52640253 is 35204625.

It is not a de Polignac number, because 52640253 - 2⁵ = 52640221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1949639 = 52640253 / (5 + 2 + 6 + 4 + 0 + 2 + 5 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52640293) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 974793 + ... + 974846.

It is an arithmetic number, because the mean of its divisors is an integer number (9748200).

Almost surely, 2^52640253 is an apocalyptic number.

It is an amenable number.

52640253 is a deficient number, since it is larger than the sum of its proper divisors (25345347).

52640253 is a wasteful number, since it uses less digits than its factorization.

52640253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1949648 (or 1949642 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 52640253 is about 7255.3602942928. The cubic root of 52640253 is about 374.7767631338.

Adding to 52640253 its reverse (35204625), we get a palindrome (87844878).

The spelling of 52640253 in words is "fifty-two million, six hundred forty thousand, two hundred fifty-three".