404056551 has 8 divisors (see below), whose sum is σ = 541856880. Its totient is φ = 267813632.

The previous prime is 404056547. The next prime is 404056553. The reversal of 404056551 is 155650404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 404056551 - 2² = 404056547 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404056553) 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, 388746 + ... + 389783.

It is an arithmetic number, because the mean of its divisors is an integer number (67732110).

Almost surely, 2^404056551 is an apocalyptic number.

404056551 is a deficient number, since it is larger than the sum of its proper divisors (137800329).

404056551 is a wasteful number, since it uses less digits than its factorization.

404056551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778705.

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 404056551 is about 20101.1579517201. The cubic root of 404056551 is about 739.2886706009.

The spelling of 404056551 in words is "four hundred four million, fifty-six thousand, five hundred fifty-one".