263421054 has 96 divisors (see below), whose sum is σ = 652579200. Its totient is φ = 76127040.

The previous prime is 263421031. The next prime is 263421061. The reversal of 263421054 is 450124362.

263421054 is a `hidden beast` number, since 2 + 634 + 21 + 0 + 5 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 795669 + ... + 795999.

It is an arithmetic number, because the mean of its divisors is an integer number (6797700).

Almost surely, 2^263421054 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 263421054, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (326289600).

263421054 is an abundant number, since it is smaller than the sum of its proper divisors (389158146).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

263421054 is a wasteful number, since it uses less digits than its factorization.

263421054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550 (or 547 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 263421054 is about 16230.2511995348. The cubic root of 263421054 is about 641.0375861326.

The spelling of 263421054 in words is "two hundred sixty-three million, four hundred twenty-one thousand, fifty-four".