513231053 has 4 divisors (see below), whose sum is σ = 513316860. Its totient is φ = 513145248.

The previous prime is 513231001. The next prime is 513231079. The reversal of 513231053 is 350132315.

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

It can be written as a sum of positive squares in 2 ways, for example, as 38775529 + 474455524 = 6227^2 + 21782^2 .

It is a cyclic number.

It is not a de Polignac number, because 513231053 - 2¹⁸ = 512968909 is a prime.

It is a super-2 number, since 2×513231053² = 526812227526977618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513231083) 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, 33200 + ... + 46137.

It is an arithmetic number, because the mean of its divisors is an integer number (128329215).

Almost surely, 2^513231053 is an apocalyptic number.

It is an amenable number.

513231053 is a deficient number, since it is larger than the sum of its proper divisors (85807).

513231053 is an equidigital number, since it uses as much as digits as its factorization.

513231053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85806.

The product of its (nonzero) digits is 1350, while the sum is 23.

The square root of 513231053 is about 22654.6033511955. The cubic root of 513231053 is about 800.6406602436.

Adding to 513231053 its reverse (350132315), we get a palindrome (863363368).

The spelling of 513231053 in words is "five hundred thirteen million, two hundred thirty-one thousand, fifty-three".