551376 has 60 divisors (see below), whose sum is σ = 1766752. Its totient is φ = 157248.

The previous prime is 551363. The next prime is 551381. The reversal of 551376 is 673155.

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 551376.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 735 + ... + 1281.

2⁵⁵¹³⁷⁶ is an apocalyptic number.

551376 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (883376).

551376 is an abundant number, since it is smaller than the sum of its proper divisors (1215376).

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

551376 is a wasteful number, since it uses less digits than its factorization.

551376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568 (or 559 counting only the distinct ones).

The product of its digits is 3150, while the sum is 27.

The square root of 551376 is about 742.5469682114. The cubic root of 551376 is about 82.0003965874. Note that the first 3 decimals are identical.

It can be divided in two parts, 55 and 1376, that added together give a triangular number (1431 = T₅₃).

The spelling of 551376 in words is "five hundred fifty-one thousand, three hundred seventy-six".