51771241 has 4 divisors (see below), whose sum is σ = 51808900. Its totient is φ = 51733584.

The previous prime is 51771227. The next prime is 51771253. The reversal of 51771241 is 14217715.

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 13690000 + 38081241 = 3700^2 + 6171^2 .

It is a cyclic number.

It is not a de Polignac number, because 51771241 - 2⁷ = 51771113 is a prime.

It is a super-2 number, since 2×51771241² = 5360522789360162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51871241) 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, 16686 + ... + 19543.

It is an arithmetic number, because the mean of its divisors is an integer number (12952225).

Almost surely, 2^51771241 is an apocalyptic number.

It is an amenable number.

51771241 is a deficient number, since it is larger than the sum of its proper divisors (37659).

51771241 is a wasteful number, since it uses less digits than its factorization.

51771241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37658.

The product of its digits is 1960, while the sum is 28.

The square root of 51771241 is about 7195.2234850629. The cubic root of 51771241 is about 372.7029742258.

Adding to 51771241 its reverse (14217715), we get a palindrome (65988956).

The spelling of 51771241 in words is "fifty-one million, seven hundred seventy-one thousand, two hundred forty-one".