405045252 has 24 divisors (see below), whose sum is σ = 1050117600. Its totient is φ = 135015048.

The previous prime is 405045241. The next prime is 405045271. The reversal of 405045252 is 252540504.

405045252 is a `hidden beast` number, since 405 + 0 + 4 + 5 + 252 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1875102 + ... + 1875317.

It is an arithmetic number, because the mean of its divisors is an integer number (43754900).

Almost surely, 2^405045252 is an apocalyptic number.

It is an amenable number.

405045252 is an abundant number, since it is smaller than the sum of its proper divisors (645072348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

405045252 is a wasteful number, since it uses less digits than its factorization.

405045252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3750432 (or 3750424 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

The square root of 405045252 is about 20125.7360610736. The cubic root of 405045252 is about 739.8911770825.

Adding to 405045252 its reverse (252540504), we get a palindrome (657585756).

It can be divided in two parts, 4050452 and 52, that added together give a palindrome (4050504).

The spelling of 405045252 in words is "four hundred five million, forty-five thousand, two hundred fifty-two".