51504261 has 16 divisors (see below), whose sum is σ = 71366400. Its totient is φ = 33000128.

The previous prime is 51504253. The next prime is 51504263. The reversal of 51504261 is 16240515.

It is a cyclic number.

It is not a de Polignac number, because 51504261 - 2³ = 51504253 is a prime.

It is a super-2 number, since 2×51504261² = 5305377802312242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51504263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19555 + ... + 22031.

It is an arithmetic number, because the mean of its divisors is an integer number (4460400).

Almost surely, 2^51504261 is an apocalyptic number.

It is an amenable number.

51504261 is a deficient number, since it is larger than the sum of its proper divisors (19862139).

51504261 is a wasteful number, since it uses less digits than its factorization.

51504261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2748.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 51504261 is about 7176.6469190005. The cubic root of 51504261 is about 372.0612036540.

Adding to 51504261 its reverse (16240515), we get a palindrome (67744776).

The spelling of 51504261 in words is "fifty-one million, five hundred four thousand, two hundred sixty-one".