513425023 has 4 divisors (see below), whose sum is σ = 514976488. Its totient is φ = 511873560.

The previous prime is 513424993. The next prime is 513425047. The reversal of 513425023 is 320524315.

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

It is a cyclic number.

It is not a de Polignac number, because 513425023 - 2⁵ = 513424991 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 (513425093) 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, 775236 + ... + 775897.

It is an arithmetic number, because the mean of its divisors is an integer number (128744122).

Almost surely, 2^513425023 is an apocalyptic number.

513425023 is a deficient number, since it is larger than the sum of its proper divisors (1551465).

513425023 is a wasteful number, since it uses less digits than its factorization.

513425023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1551464.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 513425023 is about 22658.8839751652. The cubic root of 513425023 is about 800.7415119668.

Adding to 513425023 its reverse (320524315), we get a palindrome (833949338).

It can be divided in two parts, 51342 and 5023, that added together give a palindrome (56365).

The spelling of 513425023 in words is "five hundred thirteen million, four hundred twenty-five thousand, twenty-three".