253423616 has 26 divisors (see below), whose sum is σ = 506793552. Its totient is φ = 126709760.

The previous prime is 253423613. The next prime is 253423627. The reversal of 253423616 is 616324352.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253423613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26840 + ... + 35031.

Almost surely, 2^253423616 is an apocalyptic number.

It is an amenable number.

253423616 is a deficient number, since it is larger than the sum of its proper divisors (253369936).

253423616 is an frugal number, since it uses more digits than its factorization.

253423616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61895 (or 61873 counting only the distinct ones).

The product of its digits is 25920, while the sum is 32.

The square root of 253423616 is about 15919.2844060278. The cubic root of 253423616 is about 632.8231542963.

Adding to 253423616 its reverse (616324352), we get a palindrome (869747968).

The spelling of 253423616 in words is "two hundred fifty-three million, four hundred twenty-three thousand, six hundred sixteen".