253779513 has 8 divisors (see below), whose sum is σ = 364401408. Its totient is φ = 156171984.

The previous prime is 253779499. The next prime is 253779517. The reversal of 253779513 is 315977352.

253779513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 253779513 - 2⁵ = 253779481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (253779517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3253545 + ... + 3253622.

It is an arithmetic number, because the mean of its divisors is an integer number (45550176).

Almost surely, 2^253779513 is an apocalyptic number.

It is an amenable number.

253779513 is a deficient number, since it is larger than the sum of its proper divisors (110621895).

253779513 is a wasteful number, since it uses less digits than its factorization.

253779513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6507183.

The product of its digits is 198450, while the sum is 42.

The square root of 253779513 is about 15930.4586562974. The cubic root of 253779513 is about 633.1192520820.

The spelling of 253779513 in words is "two hundred fifty-three million, seven hundred seventy-nine thousand, five hundred thirteen".