406573537 has 2 divisors, whose sum is σ = 406573538. Its totient is φ = 406573536.

The previous prime is 406573511. The next prime is 406573549. The reversal of 406573537 is 735375604.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 403246561 + 3326976 = 20081^2 + 1824^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-406573537 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 406573537.

It is not a weakly prime, because it can be changed into another prime (406573567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203286768 + 203286769.

It is an arithmetic number, because the mean of its divisors is an integer number (203286769).

Almost surely, 2^406573537 is an apocalyptic number.

It is an amenable number.

406573537 is a deficient number, since it is larger than the sum of its proper divisors (1).

406573537 is an equidigital number, since it uses as much as digits as its factorization.

406573537 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 264600, while the sum is 40.

The square root of 406573537 is about 20163.6687386001. The cubic root of 406573537 is about 740.8205756166.

The spelling of 406573537 in words is "four hundred six million, five hundred seventy-three thousand, five hundred thirty-seven".