253133623 has 4 divisors (see below), whose sum is σ = 254239240. Its totient is φ = 252028008.

The previous prime is 253133609. The next prime is 253133633. The reversal of 253133623 is 326331352.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253133623 is a prime.

It is a super-2 number, since 2×253133623² = 128153262186212258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 253133591 and 253133600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253133603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 552465 + ... + 552922.

It is an arithmetic number, because the mean of its divisors is an integer number (63559810).

Almost surely, 2^253133623 is an apocalyptic number.

253133623 is a deficient number, since it is larger than the sum of its proper divisors (1105617).

253133623 is a wasteful number, since it uses less digits than its factorization.

253133623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105616.

The product of its digits is 9720, while the sum is 28.

The square root of 253133623 is about 15910.1735691349. The cubic root of 253133623 is about 632.5816820255.

Adding to 253133623 its reverse (326331352), we get a palindrome (579464975).

The spelling of 253133623 in words is "two hundred fifty-three million, one hundred thirty-three thousand, six hundred twenty-three".