51741869 has 4 divisors (see below), whose sum is σ = 51759900. Its totient is φ = 51723840.

The previous prime is 51741839. The next prime is 51741871. The reversal of 51741869 is 96814715.

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 49140100 + 2601769 = 7010^2 + 1613^2 .

It is a cyclic number.

It is not a de Polignac number, because 51741869 - 2¹² = 51737773 is a prime.

It is a super-2 number, since 2×51741869² = 5354442015226322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51741839) 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, 3644 + ... + 10805.

It is an arithmetic number, because the mean of its divisors is an integer number (12939975).

Almost surely, 2^51741869 is an apocalyptic number.

It is an amenable number.

51741869 is a deficient number, since it is larger than the sum of its proper divisors (18031).

51741869 is a wasteful number, since it uses less digits than its factorization.

51741869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18030.

The product of its digits is 60480, while the sum is 41.

The square root of 51741869 is about 7193.1821192015. The cubic root of 51741869 is about 372.6324775406.

The spelling of 51741869 in words is "fifty-one million, seven hundred forty-one thousand, eight hundred sixty-nine".