406382551 has 4 divisors (see below), whose sum is σ = 415833352. Its totient is φ = 396931752.

The previous prime is 406382531. The next prime is 406382579. The reversal of 406382551 is 155283604.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 406382551 - 2²³ = 397993943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406382531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4725336 + ... + 4725421.

It is an arithmetic number, because the mean of its divisors is an integer number (103958338).

Almost surely, 2^406382551 is an apocalyptic number.

406382551 is a deficient number, since it is larger than the sum of its proper divisors (9450801).

406382551 is an equidigital number, since it uses as much as digits as its factorization.

406382551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9450800.

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 406382551 is about 20158.9322881942. The cubic root of 406382551 is about 740.7045584590.

The spelling of 406382551 in words is "four hundred six million, three hundred eighty-two thousand, five hundred fifty-one".