513025551 has 12 divisors (see below), whose sum is σ = 743454712. Its totient is φ = 340901136.

The previous prime is 513025543. The next prime is 513025553. The reversal of 513025551 is 155520315.

It is not a de Polignac number, because 513025551 - 2³ = 513025543 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 (513025553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90076 + ... + 95601.

Almost surely, 2^513025551 is an apocalyptic number.

513025551 is a deficient number, since it is larger than the sum of its proper divisors (230429161).

513025551 is a wasteful number, since it uses less digits than its factorization.

513025551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185990 (or 185987 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 27.

The square root of 513025551 is about 22650.0673508932. The cubic root of 513025551 is about 800.5337849087.

Adding to 513025551 its reverse (155520315), we get a palindrome (668545866).

The spelling of 513025551 in words is "five hundred thirteen million, twenty-five thousand, five hundred fifty-one".