51395705 has 8 divisors (see below), whose sum is σ = 62032392. Its totient is φ = 40878208.

The previous prime is 51395699. The next prime is 51395711. The reversal of 51395705 is 50759315.

It is an interprime number because it is at equal distance from previous prime (51395699) and next prime (51395711).

It can be written as a sum of positive squares in 4 ways, for example, as 21409129 + 29986576 = 4627^2 + 5476^2 .

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 51395705 - 2⁴ = 51395689 is a prime.

It is a Duffinian 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, 28844 + ... + 30573.

It is an arithmetic number, because the mean of its divisors is an integer number (7754049).

Almost surely, 2^51395705 is an apocalyptic number.

It is an amenable number.

51395705 is a deficient number, since it is larger than the sum of its proper divisors (10636687).

51395705 is a wasteful number, since it uses less digits than its factorization.

51395705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59595.

The product of its (nonzero) digits is 23625, while the sum is 35.

The square root of 51395705 is about 7169.0797875320. The cubic root of 51395705 is about 371.7996208585.

The spelling of 51395705 in words is "fifty-one million, three hundred ninety-five thousand, seven hundred five".