551251040 has 48 divisors (see below), whose sum is σ = 1303782480. Its totient is φ = 220254720.

The previous prime is 551251033. The next prime is 551251073. The reversal of 551251040 is 40152155.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 551250997 and 551251015.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227435 + ... + 229845.

It is an arithmetic number, because the mean of its divisors is an integer number (27162135).

Almost surely, 2^551251040 is an apocalyptic number.

It is an amenable number.

551251040 is an abundant number, since it is smaller than the sum of its proper divisors (752531440).

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

551251040 is a wasteful number, since it uses less digits than its factorization.

551251040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3855 (or 3847 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 551251040 is about 23478.7359114583. The cubic root of 551251040 is about 819.9420145394.

It can be divided in two parts, 55125 and 1040, that added together give a palindrome (56165).

The spelling of 551251040 in words is "five hundred fifty-one million, two hundred fifty-one thousand, forty".