51545313 has 12 divisors (see below), whose sum is σ = 74555520. Its totient is φ = 34316856.

The previous prime is 51545303. The next prime is 51545341. The reversal of 51545313 is 31354515.

It is not a de Polignac number, because 51545313 - 2⁴ = 51545297 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51545303) 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, 3928 + ... + 10886.

It is an arithmetic number, because the mean of its divisors is an integer number (6212960).

Almost surely, 2^51545313 is an apocalyptic number.

It is an amenable number.

51545313 is a deficient number, since it is larger than the sum of its proper divisors (23010207).

51545313 is a wasteful number, since it uses less digits than its factorization.

51545313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7788 (or 7785 counting only the distinct ones).

The product of its digits is 4500, while the sum is 27.

The square root of 51545313 is about 7179.5064593606. The cubic root of 51545313 is about 372.1600291361.

Adding to 51545313 its reverse (31354515), we get a palindrome (82899828).

The spelling of 51545313 in words is "fifty-one million, five hundred forty-five thousand, three hundred thirteen".