551400132 has 24 divisors (see below), whose sum is σ = 1294042176. Its totient is φ = 182736928.

The previous prime is 551400079. The next prime is 551400133. The reversal of 551400132 is 231004155.

It is a junction number, because it is equal to n+sod(n) for n = 551400099 and 551400108.

It is not an unprimeable number, because it can be changed into a prime (551400133) 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, 130728 + ... + 134879.

It is an arithmetic number, because the mean of its divisors is an integer number (53918424).

Almost surely, 2^551400132 is an apocalyptic number.

It is an amenable number.

551400132 is an abundant number, since it is smaller than the sum of its proper divisors (742642044).

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

551400132 is a wasteful number, since it uses less digits than its factorization.

551400132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265787 (or 265785 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 551400132 is about 23481.9107399717. The cubic root of 551400132 is about 820.0159287011.

Adding to 551400132 its reverse (231004155), we get a palindrome (782404287).

The spelling of 551400132 in words is "five hundred fifty-one million, four hundred thousand, one hundred thirty-two".