405054523 has 2 divisors, whose sum is σ = 405054524. Its totient is φ = 405054522.

The previous prime is 405054509. The next prime is 405054547. The reversal of 405054523 is 325450504.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-405054523 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 405054491 and 405054500.

It is not a weakly prime, because it can be changed into another prime (405054553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202527261 + 202527262.

It is an arithmetic number, because the mean of its divisors is an integer number (202527262).

Almost surely, 2^405054523 is an apocalyptic number.

405054523 is a deficient number, since it is larger than the sum of its proper divisors (1).

405054523 is an equidigital number, since it uses as much as digits as its factorization.

405054523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12000, while the sum is 28.

The square root of 405054523 is about 20125.9663867353. The cubic root of 405054523 is about 739.8968221133.

The spelling of 405054523 in words is "four hundred five million, fifty-four thousand, five hundred twenty-three".