253120513 has 4 divisors (see below), whose sum is σ = 253174788. Its totient is φ = 253066240.

The previous prime is 253120507. The next prime is 253120519. The reversal of 253120513 is 315021352.

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

It is an interprime number because it is at equal distance from previous prime (253120507) and next prime (253120519).

It can be written as a sum of positive squares in 2 ways, for example, as 76947984 + 176172529 = 8772^2 + 13273^2 .

It is a cyclic number.

It is not a de Polignac number, because 253120513 - 2⁵ = 253120481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253120519) 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, 19408 + ... + 29713.

It is an arithmetic number, because the mean of its divisors is an integer number (63293697).

Almost surely, 2^253120513 is an apocalyptic number.

It is an amenable number.

253120513 is a deficient number, since it is larger than the sum of its proper divisors (54275).

253120513 is an equidigital number, since it uses as much as digits as its factorization.

253120513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54274.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 253120513 is about 15909.7615632667. The cubic root of 253120513 is about 632.5707611939.

Adding to 253120513 its reverse (315021352), we get a palindrome (568141865).

The spelling of 253120513 in words is "two hundred fifty-three million, one hundred twenty thousand, five hundred thirteen".