551436 has 12 divisors (see below), whose sum is σ = 1286712. Its totient is φ = 183808.

The previous prime is 551423. The next prime is 551443. The reversal of 551436 is 634155.

It is a tau number, because it is divible by the number of its divisors (12).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 551436.

It is an unprimeable number.

551436 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22965 + ... + 22988.

It is an arithmetic number, because the mean of its divisors is an integer number (107226).

2⁵⁵¹⁴³⁶ is an apocalyptic number.

It is an amenable number.

551436 is an abundant number, since it is smaller than the sum of its proper divisors (735276).

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

551436 is a wasteful number, since it uses less digits than its factorization.

551436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45960 (or 45958 counting only the distinct ones).

The product of its digits is 1800, while the sum is 24.

The square root of 551436 is about 742.5873685971. The cubic root of 551436 is about 82.0033708707.

The spelling of 551436 in words is "five hundred fifty-one thousand, four hundred thirty-six".