265530406 has 4 divisors (see below), whose sum is σ = 398295612. Its totient is φ = 132765202.

The previous prime is 265530383. The next prime is 265530413. The reversal of 265530406 is 604035562.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66382600 + ... + 66382603.

It is an arithmetic number, because the mean of its divisors is an integer number (99573903).

Almost surely, 2^265530406 is an apocalyptic number.

265530406 is a deficient number, since it is larger than the sum of its proper divisors (132765206).

265530406 is a wasteful number, since it uses less digits than its factorization.

265530406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132765205.

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 265530406 is about 16295.1037431494. The cubic root of 265530406 is about 642.7440818405.

Adding to 265530406 its reverse (604035562), we get a palindrome (869565968).

The spelling of 265530406 in words is "two hundred sixty-five million, five hundred thirty thousand, four hundred six".