253145933 has 4 divisors (see below), whose sum is σ = 256195968. Its totient is φ = 250095900.

The previous prime is 253145923. The next prime is 253145939. The reversal of 253145933 is 339541352.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253145933 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 253145893 and 253145902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253145939) 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, 1524893 + ... + 1525058.

It is an arithmetic number, because the mean of its divisors is an integer number (64048992).

Almost surely, 2^253145933 is an apocalyptic number.

It is an amenable number.

253145933 is a deficient number, since it is larger than the sum of its proper divisors (3050035).

253145933 is an equidigital number, since it uses as much as digits as its factorization.

253145933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3050034.

The product of its digits is 48600, while the sum is 35.

The square root of 253145933 is about 15910.5604238191. The cubic root of 253145933 is about 632.5919361016.

The spelling of 253145933 in words is "two hundred fifty-three million, one hundred forty-five thousand, nine hundred thirty-three".