51512341 has 4 divisors (see below), whose sum is σ = 53752032. Its totient is φ = 49272652.

The previous prime is 51512333. The next prime is 51512353. The reversal of 51512341 is 14321515.

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.

It is a cyclic number.

It is not a de Polignac number, because 51512341 - 2³ = 51512333 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 (51512371) 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, 1119811 + ... + 1119856.

It is an arithmetic number, because the mean of its divisors is an integer number (13438008).

Almost surely, 2^51512341 is an apocalyptic number.

It is an amenable number.

51512341 is a deficient number, since it is larger than the sum of its proper divisors (2239691).

51512341 is a wasteful number, since it uses less digits than its factorization.

51512341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2239690.

The product of its digits is 600, while the sum is 22.

The square root of 51512341 is about 7177.2098339118. The cubic root of 51512341 is about 372.0806589850.

Adding to 51512341 its reverse (14321515), we get a palindrome (65833856).

The spelling of 51512341 in words is "fifty-one million, five hundred twelve thousand, three hundred forty-one".