51072571 has 8 divisors (see below), whose sum is σ = 56072304. Its totient is φ = 46132320.

The previous prime is 51072547. The next prime is 51072587. The reversal of 51072571 is 17527015.

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 51072571 - 2¹⁵ = 51039803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51042571) 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, 13060 + ... + 16513.

It is an arithmetic number, because the mean of its divisors is an integer number (7009038).

Almost surely, 2^51072571 is an apocalyptic number.

51072571 is a deficient number, since it is larger than the sum of its proper divisors (4999733).

51072571 is a wasteful number, since it uses less digits than its factorization.

51072571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29741.

The product of its (nonzero) digits is 2450, while the sum is 28.

The square root of 51072571 is about 7146.5076086156. The cubic root of 51072571 is about 371.0187918981.

Adding to 51072571 its reverse (17527015), we get a palindrome (68599586).

The spelling of 51072571 in words is "fifty-one million, seventy-two thousand, five hundred seventy-one".