405241553 has 2 divisors, whose sum is σ = 405241554. Its totient is φ = 405241552.

The previous prime is 405241547. The next prime is 405241609. The reversal of 405241553 is 355142504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 296080849 + 109160704 = 17207^2 + 10448^2 .

It is a cyclic number.

It is not a de Polignac number, because 405241553 - 2¹⁴ = 405225169 is a prime.

It is not a weakly prime, because it can be changed into another prime (405241513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202620776 + 202620777.

It is an arithmetic number, because the mean of its divisors is an integer number (202620777).

Almost surely, 2^405241553 is an apocalyptic number.

It is an amenable number.

405241553 is a deficient number, since it is larger than the sum of its proper divisors (1).

405241553 is an equidigital number, since it uses as much as digits as its factorization.

405241553 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 29.

The square root of 405241553 is about 20130.6123354457. The cubic root of 405241553 is about 740.0106846522.

The spelling of 405241553 in words is "four hundred five million, two hundred forty-one thousand, five hundred fifty-three".