512240357 has 4 divisors (see below), whose sum is σ = 523139136. Its totient is φ = 501341580.

The previous prime is 512240297. The next prime is 512240401. The reversal of 512240357 is 753042215.

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: 753042215 = 5 ⋅150608443.

It is a cyclic number.

It is not a de Polignac number, because 512240357 - 2⁶ = 512240293 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 (512240557) 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, 5449319 + ... + 5449412.

It is an arithmetic number, because the mean of its divisors is an integer number (130784784).

Almost surely, 2^512240357 is an apocalyptic number.

It is an amenable number.

512240357 is a deficient number, since it is larger than the sum of its proper divisors (10898779).

512240357 is a wasteful number, since it uses less digits than its factorization.

512240357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10898778.

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 512240357 is about 22632.7275643039. The cubic root of 512240357 is about 800.1251663532.

The spelling of 512240357 in words is "five hundred twelve million, two hundred forty thousand, three hundred fifty-seven".