405312553 has 2 divisors, whose sum is σ = 405312554. Its totient is φ = 405312552.

The previous prime is 405312533. The next prime is 405312563. The reversal of 405312553 is 355213504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 405297424 + 15129 = 20132^2 + 123^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-405312553 is a prime.

It is not a weakly prime, because it can be changed into another prime (405312533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202656276 + 202656277.

It is an arithmetic number, because the mean of its divisors is an integer number (202656277).

Almost surely, 2^405312553 is an apocalyptic number.

It is an amenable number.

405312553 is a deficient number, since it is larger than the sum of its proper divisors (1).

405312553 is an equidigital number, since it uses as much as digits as its factorization.

405312553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 405312553 is about 20132.3757415761. The cubic root of 405312553 is about 740.0538997750.

The spelling of 405312553 in words is "four hundred five million, three hundred twelve thousand, five hundred fifty-three".