51178413 has 16 divisors (see below), whose sum is σ = 80168256. Its totient is φ = 28631040.

The previous prime is 51178399. The next prime is 51178447. The reversal of 51178413 is 31487115.

It is not a de Polignac number, because 51178413 - 2⁶ = 51178349 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51178453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59220 + ... + 60077.

It is an arithmetic number, because the mean of its divisors is an integer number (5010516).

Almost surely, 2^51178413 is an apocalyptic number.

It is an amenable number.

51178413 is a deficient number, since it is larger than the sum of its proper divisors (28989843).

51178413 is a wasteful number, since it uses less digits than its factorization.

51178413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119324.

The product of its digits is 3360, while the sum is 30.

The square root of 51178413 is about 7153.9089314863. The cubic root of 51178413 is about 371.2749129060.

It can be divided in two parts, 5117 and 8413, that added together give a triangular number (13530 = T₁₆₄).

The spelling of 51178413 in words is "fifty-one million, one hundred seventy-eight thousand, four hundred thirteen".