51264245 has 8 divisors (see below), whose sum is σ = 61608120. Its totient is φ = 40950720.

The previous prime is 51264221. The next prime is 51264247. The reversal of 51264245 is 54246215.

It can be written as a sum of positive squares in 4 ways, for example, as 1378276 + 49885969 = 1174^2 + 7063^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51264245 - 2⁶ = 51264181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51264247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3686 + ... + 10775.

It is an arithmetic number, because the mean of its divisors is an integer number (7701015).

Almost surely, 2^51264245 is an apocalyptic number.

It is an amenable number.

51264245 is a deficient number, since it is larger than the sum of its proper divisors (10343875).

51264245 is a wasteful number, since it uses less digits than its factorization.

51264245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15175.

The product of its digits is 9600, while the sum is 29.

The square root of 51264245 is about 7159.9053764697. The cubic root of 51264245 is about 371.4823536871.

The spelling of 51264245 in words is "fifty-one million, two hundred sixty-four thousand, two hundred forty-five".