533661400 has 24 divisors (see below), whose sum is σ = 1240763220. Its totient is φ = 213464480.

The previous prime is 533661287. The next prime is 533661409. The reversal of 533661400 is 4166335.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (533661409) 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 5 ways as a sum of consecutive naturals, for example, 1333954 + ... + 1334353.

Almost surely, 2^533661400 is an apocalyptic number.

533661400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

533661400 is an abundant number, since it is smaller than the sum of its proper divisors (707101820).

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

533661400 is a wasteful number, since it uses less digits than its factorization.

533661400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2668323 (or 2668314 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 533661400 is about 23101.1125273221. The cubic root of 533661400 is about 811.1265126382.

It can be divided in two parts, 533661 and 400, that added together give a triangular number (534061 = T₁₀₃₃).

The spelling of 533661400 in words is "five hundred thirty-three million, six hundred sixty-one thousand, four hundred".