400570523 has 2 divisors, whose sum is σ = 400570524. Its totient is φ = 400570522.

The previous prime is 400570517. The next prime is 400570543. The reversal of 400570523 is 325075004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 400570523 - 2⁶ = 400570459 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 400570492 and 400570501.

It is not a weakly prime, because it can be changed into another prime (400570543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200285261 + 200285262.

It is an arithmetic number, because the mean of its divisors is an integer number (200285262).

Almost surely, 2^400570523 is an apocalyptic number.

400570523 is a deficient number, since it is larger than the sum of its proper divisors (1).

400570523 is an equidigital number, since it uses as much as digits as its factorization.

400570523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 400570523 is about 20014.2579927411. The cubic root of 400570523 is about 737.1564374299.

The spelling of 400570523 in words is "four hundred million, five hundred seventy thousand, five hundred twenty-three".