356557423 has 4 divisors (see below), whose sum is σ = 357198120. Its totient is φ = 355916728.

The previous prime is 356557403. The next prime is 356557427. The reversal of 356557423 is 324755653.

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 356557423 - 2⁹ = 356556911 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (356557427) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 319513 + ... + 320626.

It is an arithmetic number, because the mean of its divisors is an integer number (89299530).

Almost surely, 2^356557423 is an apocalyptic number.

356557423 is a deficient number, since it is larger than the sum of its proper divisors (640697).

356557423 is an equidigital number, since it uses as much as digits as its factorization.

356557423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640696.

The product of its digits is 378000, while the sum is 40.

The square root of 356557423 is about 18882.7281662370. The cubic root of 356557423 is about 709.1038240097.

The spelling of 356557423 in words is "three hundred fifty-six million, five hundred fifty-seven thousand, four hundred twenty-three".