551450432 has 56 divisors (see below), whose sum is σ = 1190783496. Its totient is φ = 251854848.

The previous prime is 551450407. The next prime is 551450441. The reversal of 551450432 is 234054155.

It can be written as a sum of positive squares in 4 ways, for example, as 891136 + 550559296 = 944^2 + 23464^2 .

It is a junction number, because it is equal to n+sod(n) for n = 551450395 and 551450404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77288 + ... + 84120.

It is an arithmetic number, because the mean of its divisors is an integer number (21263991).

Almost surely, 2^551450432 is an apocalyptic number.

551450432 is a gapful number since it is divisible by the number (52) 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 551450432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (595391748).

551450432 is an abundant number, since it is smaller than the sum of its proper divisors (639333064).

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

551450432 is a wasteful number, since it uses less digits than its factorization.

551450432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6955 (or 6945 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 551450432 is about 23482.9817527502. The cubic root of 551450432 is about 820.0408625284.

The spelling of 551450432 in words is "five hundred fifty-one million, four hundred fifty thousand, four hundred thirty-two".