252405045 has 32 divisors (see below), whose sum is σ = 450489600. Its totient is φ = 134085312.

The previous prime is 252405037. The next prime is 252405089. The reversal of 252405045 is 540504252.

252405045 is a `hidden beast` number, since 252 + 405 + 0 + 4 + 5 = 666.

It is not a de Polignac number, because 252405045 - 2³ = 252405037 is a prime.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31951 + ... + 39059.

It is an arithmetic number, because the mean of its divisors is an integer number (14077800).

Almost surely, 2^252405045 is an apocalyptic number.

It is an amenable number.

252405045 is a deficient number, since it is larger than the sum of its proper divisors (198084555).

252405045 is a wasteful number, since it uses less digits than its factorization.

252405045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7386 (or 7380 counting only the distinct ones).

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

The square root of 252405045 is about 15887.2604623956. The cubic root of 252405045 is about 631.9741926184.

Adding to 252405045 its reverse (540504252), we get a palindrome (792909297).

The spelling of 252405045 in words is "two hundred fifty-two million, four hundred five thousand, forty-five".