405466253 has 2 divisors, whose sum is σ = 405466254. Its totient is φ = 405466252.

The previous prime is 405466219. The next prime is 405466277. The reversal of 405466253 is 352664504.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 230644969 + 174821284 = 15187^2 + 13222^2 .

It is a cyclic number.

It is not a de Polignac number, because 405466253 - 2²⁸ = 137030797 is a prime.

It is a super-3 number, since 3×405466253³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (405466553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202733126 + 202733127.

It is an arithmetic number, because the mean of its divisors is an integer number (202733127).

Almost surely, 2^405466253 is an apocalyptic number.

It is an amenable number.

405466253 is a deficient number, since it is larger than the sum of its proper divisors (1).

405466253 is an equidigital number, since it uses as much as digits as its factorization.

405466253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86400, while the sum is 35.

The square root of 405466253 is about 20136.1926142953. The cubic root of 405466253 is about 740.1474341010.

It can be divided in two parts, 4054 and 66253, that added together give a palindrome (70307).

The spelling of 405466253 in words is "four hundred five million, four hundred sixty-six thousand, two hundred fifty-three".