513036397 has 4 divisors (see below), whose sum is σ = 524967520. Its totient is φ = 501105276.

The previous prime is 513036389. The next prime is 513036401. The reversal of 513036397 is 793630315.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 793630315 = 5 ⋅158726063.

It is a cyclic number.

It is not a de Polignac number, because 513036397 - 2³ = 513036389 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 (513036497) 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, 5965497 + ... + 5965582.

It is an arithmetic number, because the mean of its divisors is an integer number (131241880).

Almost surely, 2^513036397 is an apocalyptic number.

It is an amenable number.

513036397 is a deficient number, since it is larger than the sum of its proper divisors (11931123).

513036397 is a wasteful number, since it uses less digits than its factorization.

513036397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11931122.

The product of its (nonzero) digits is 51030, while the sum is 37.

The square root of 513036397 is about 22650.3067749644. The cubic root of 513036397 is about 800.5394262965.

The spelling of 513036397 in words is "five hundred thirteen million, thirty-six thousand, three hundred ninety-seven".