263052421 has 4 divisors (see below), whose sum is σ = 265606432. Its totient is φ = 260498412.

The previous prime is 263052347. The next prime is 263052431. The reversal of 263052421 is 124250362.

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 a cyclic number.

It is not a de Polignac number, because 263052421 - 2¹¹ = 263050373 is a prime.

It is a super-2 number, since 2×263052421² = 138393152387922482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263052431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1276851 + ... + 1277056.

It is an arithmetic number, because the mean of its divisors is an integer number (66401608).

Almost surely, 2^263052421 is an apocalyptic number.

It is an amenable number.

263052421 is a deficient number, since it is larger than the sum of its proper divisors (2554011).

263052421 is a wasteful number, since it uses less digits than its factorization.

263052421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2554010.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 263052421 is about 16218.8908683670. The cubic root of 263052421 is about 640.7384225935.

The spelling of 263052421 in words is "two hundred sixty-three million, fifty-two thousand, four hundred twenty-one".