523421400 has 48 divisors (see below), whose sum is σ = 1622608200. Its totient is φ = 139578880.

The previous prime is 523421399. The next prime is 523421401. The reversal of 523421400 is 4124325.

It is an interprime number because it is at equal distance from previous prime (523421399) and next prime (523421401).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523421401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 435585 + ... + 436784.

Almost surely, 2^523421400 is an apocalyptic number.

523421400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

523421400 is an abundant number, since it is smaller than the sum of its proper divisors (1099186800).

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

523421400 is a wasteful number, since it uses less digits than its factorization.

523421400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872388 (or 872379 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 523421400 is about 22878.4046646614. The cubic root of 523421400 is about 805.9049530079.

Adding to 523421400 its reverse (4124325), we get a palindrome (527545725).

The spelling of 523421400 in words is "five hundred twenty-three million, four hundred twenty-one thousand, four hundred".