513472453 has 4 divisors (see below), whose sum is σ = 552970348. Its totient is φ = 473974560.

The previous prime is 513472439. The next prime is 513472481. The reversal of 513472453 is 354274315.

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 247684644 + 265787809 = 15738^2 + 16303^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-513472453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513472483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19748928 + ... + 19748953.

It is an arithmetic number, because the mean of its divisors is an integer number (138242587).

Almost surely, 2^513472453 is an apocalyptic number.

It is an amenable number.

513472453 is a deficient number, since it is larger than the sum of its proper divisors (39497895).

513472453 is a wasteful number, since it uses less digits than its factorization.

513472453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39497894.

The product of its digits is 50400, while the sum is 34.

The square root of 513472453 is about 22659.9305603526. The cubic root of 513472453 is about 800.7661686020.

The spelling of 513472453 in words is "five hundred thirteen million, four hundred seventy-two thousand, four hundred fifty-three".