253531402 has 8 divisors (see below), whose sum is σ = 400312800. Its totient is φ = 120093804.

The previous prime is 253531391. The next prime is 253531403. The reversal of 253531402 is 204135352.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (253531403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3335902 + ... + 3335977.

It is an arithmetic number, because the mean of its divisors is an integer number (50039100).

Almost surely, 2^253531402 is an apocalyptic number.

253531402 is a deficient number, since it is larger than the sum of its proper divisors (146781398).

253531402 is a wasteful number, since it uses less digits than its factorization.

253531402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6671900.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 253531402 is about 15922.6694370008. The cubic root of 253531402 is about 632.9128589176.

Adding to 253531402 its reverse (204135352), we get a palindrome (457666754).

The spelling of 253531402 in words is "two hundred fifty-three million, five hundred thirty-one thousand, four hundred two".