551661462 has 64 divisors (see below), whose sum is σ = 1347321600. Its totient is φ = 165925440.

The previous prime is 551661443. The next prime is 551661497. The reversal of 551661462 is 264166155.

551661462 is a `hidden beast` number, since 551 + 6 + 61 + 46 + 2 = 666.

551661462 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77989 + ... + 84767.

It is an arithmetic number, because the mean of its divisors is an integer number (21051900).

Almost surely, 2^551661462 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551661462, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (673660800).

551661462 is an abundant number, since it is smaller than the sum of its proper divisors (795660138).

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

551661462 is a wasteful number, since it uses less digits than its factorization.

551661462 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6938 (or 6932 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 551661462 is about 23487.4745768888. The cubic root of 551661462 is about 820.1454540705.

The spelling of 551661462 in words is "five hundred fifty-one million, six hundred sixty-one thousand, four hundred sixty-two".