262640253 has 4 divisors (see below), whose sum is σ = 350187008. Its totient is φ = 175093500.

The previous prime is 262640251. The next prime is 262640263. The reversal of 262640253 is 352046262.

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 not a de Polignac number, because 262640253 - 2¹ = 262640251 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 262640253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (262640251) 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, 43773373 + ... + 43773378.

It is an arithmetic number, because the mean of its divisors is an integer number (87546752).

Almost surely, 2^262640253 is an apocalyptic number.

It is an amenable number.

262640253 is a deficient number, since it is larger than the sum of its proper divisors (87546755).

262640253 is an equidigital number, since it uses as much as digits as its factorization.

262640253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87546754.

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 262640253 is about 16206.1794695727. The cubic root of 262640253 is about 640.4035971551.

The spelling of 262640253 in words is "two hundred sixty-two million, six hundred forty thousand, two hundred fifty-three".