513225406 has 8 divisors (see below), whose sum is σ = 773033184. Its totient is φ = 255547680.

The previous prime is 513225403. The next prime is 513225421. The reversal of 513225406 is 604522315.

513225406 = 193² + 194² + ... + 1156².

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513225403) 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, 531910 + ... + 532873.

It is an arithmetic number, because the mean of its divisors is an integer number (96629148).

Almost surely, 2^513225406 is an apocalyptic number.

513225406 is a deficient number, since it is larger than the sum of its proper divisors (259807778).

513225406 is a wasteful number, since it uses less digits than its factorization.

513225406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065026.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 513225406 is about 22654.4787183462. The cubic root of 513225406 is about 800.6377237920.

The spelling of 513225406 in words is "five hundred thirteen million, two hundred twenty-five thousand, four hundred six".