51612245 has 8 divisors (see below), whose sum is σ = 62573784. Its totient is φ = 40863744.

The previous prime is 51612217. The next prime is 51612269. The reversal of 51612245 is 54221615.

It can be written as a sum of positive squares in 4 ways, for example, as 9284209 + 42328036 = 3047^2 + 6506^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 51612245 - 2¹⁰ = 51611221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52724 + ... + 53693.

It is an arithmetic number, because the mean of its divisors is an integer number (7821723).

Almost surely, 2^51612245 is an apocalyptic number.

It is an amenable number.

51612245 is a deficient number, since it is larger than the sum of its proper divisors (10961539).

51612245 is a wasteful number, since it uses less digits than its factorization.

51612245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106519.

The product of its digits is 2400, while the sum is 26.

The square root of 51612245 is about 7184.1662703476. The cubic root of 51612245 is about 372.3210437185.

The spelling of 51612245 in words is "fifty-one million, six hundred twelve thousand, two hundred forty-five".