51357017 has 4 divisors (see below), whose sum is σ = 54378036. Its totient is φ = 48336000.

The previous prime is 51357011. The next prime is 51357043. The reversal of 51357017 is 71075315.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19219456 + 32137561 = 4384^2 + 5669^2 .

It is a cyclic number.

It is not a de Polignac number, because 51357017 - 2⁴ = 51357001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51357011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1510484 + ... + 1510517.

It is an arithmetic number, because the mean of its divisors is an integer number (13594509).

Almost surely, 2^51357017 is an apocalyptic number.

It is an amenable number.

51357017 is a deficient number, since it is larger than the sum of its proper divisors (3021019).

51357017 is a wasteful number, since it uses less digits than its factorization.

51357017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3021018.

The product of its (nonzero) digits is 3675, while the sum is 29.

The square root of 51357017 is about 7166.3810253154. The cubic root of 51357017 is about 371.7063070011.

The spelling of 51357017 in words is "fifty-one million, three hundred fifty-seven thousand, seventeen".