51344245 has 4 divisors (see below), whose sum is σ = 61613100. Its totient is φ = 41075392.

The previous prime is 51344221. The next prime is 51344261. The reversal of 51344245 is 54244315.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54244315 = 5 ⋅10848863.

It can be written as a sum of positive squares in 2 ways, for example, as 12680721 + 38663524 = 3561^2 + 6218^2 .

It is a cyclic number.

It is not a de Polignac number, because 51344245 - 2²⁵ = 17789813 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5134420 + ... + 5134429.

It is an arithmetic number, because the mean of its divisors is an integer number (15403275).

Almost surely, 2^51344245 is an apocalyptic number.

It is an amenable number.

51344245 is a deficient number, since it is larger than the sum of its proper divisors (10268855).

51344245 is a wasteful number, since it uses less digits than its factorization.

51344245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10268854.

The product of its digits is 9600, while the sum is 28.

The square root of 51344245 is about 7165.4898646220. The cubic root of 51344245 is about 371.6754911760.

The spelling of 51344245 in words is "fifty-one million, three hundred forty-four thousand, two hundred forty-five".