253083779 has 4 divisors (see below), whose sum is σ = 272551776. Its totient is φ = 233615784.

The previous prime is 253083769. The next prime is 253083791. The reversal of 253083779 is 977380352.

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

It is a cyclic number.

It is not a de Polignac number, because 253083779 - 2⁴ = 253083763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253083769) 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, 9733979 + ... + 9734004.

It is an arithmetic number, because the mean of its divisors is an integer number (68137944).

Almost surely, 2^253083779 is an apocalyptic number.

253083779 is a deficient number, since it is larger than the sum of its proper divisors (19467997).

253083779 is a wasteful number, since it uses less digits than its factorization.

253083779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19467996.

The product of its (nonzero) digits is 317520, while the sum is 44.

The square root of 253083779 is about 15908.6070729024. The cubic root of 253083779 is about 632.5401591982.

The spelling of 253083779 in words is "two hundred fifty-three million, eighty-three thousand, seven hundred seventy-nine".