551364 has 24 divisors (see below), whose sum is σ = 1403808. Its totient is φ = 167040.

The previous prime is 551363. The next prime is 551381. The reversal of 551364 is 463155.

551364 = T₈₆ + T₈₇ + ... + T₁₅₇.

It is not an unprimeable number, because it can be changed into a prime (551363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1957 + ... + 2220.

It is an arithmetic number, because the mean of its divisors is an integer number (58492).

2⁵⁵¹³⁶⁴ is an apocalyptic number.

It is an amenable number.

551364 is an abundant number, since it is smaller than the sum of its proper divisors (852444).

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

551364 is a wasteful number, since it uses less digits than its factorization.

551364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4195 (or 4193 counting only the distinct ones).

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

The square root of 551364 is about 742.5388878705. The cubic root of 551364 is about 81.9998017049. Note that the first 3 decimals are identical.

Subtracting from 551364 its reverse (463155), we obtain a square (88209 = 297²).

The spelling of 551364 in words is "five hundred fifty-one thousand, three hundred sixty-four".