551964406 has 16 divisors (see below), whose sum is σ = 951183360. Its totient is φ = 235316520.

The previous prime is 551964379. The next prime is 551964431. The reversal of 551964406 is 604469155.

It is a happy number.

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, 100536 + ... + 105883.

It is an arithmetic number, because the mean of its divisors is an integer number (59448960).

Almost surely, 2^551964406 is an apocalyptic number.

551964406 is a deficient number, since it is larger than the sum of its proper divisors (399218954).

551964406 is a wasteful number, since it uses less digits than its factorization.

551964406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206619.

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 551964406 is about 23493.9227461061. The cubic root of 551964406 is about 820.2955537816.

The spelling of 551964406 in words is "five hundred fifty-one million, nine hundred sixty-four thousand, four hundred six".