51102413 has 4 divisors (see below), whose sum is σ = 51629340. Its totient is φ = 50575488.

The previous prime is 51102407. The next prime is 51102427. The reversal of 51102413 is 31420115.

51102413 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 20775364 + 30327049 = 4558^2 + 5507^2 .

It is a cyclic number.

It is not a de Polignac number, because 51102413 - 2⁴ = 51102397 is a prime.

It is a super-2 number, since 2×51102413² = 5222913228845138, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 51102391 and 51102400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51102433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263318 + ... + 263511.

It is an arithmetic number, because the mean of its divisors is an integer number (12907335).

Almost surely, 2^51102413 is an apocalyptic number.

It is an amenable number.

51102413 is a deficient number, since it is larger than the sum of its proper divisors (526927).

51102413 is an equidigital number, since it uses as much as digits as its factorization.

51102413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526926.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 51102413 is about 7148.5951766763. The cubic root of 51102413 is about 371.0910406402.

Adding to 51102413 its reverse (31420115), we get a palindrome (82522528).

It can be divided in two parts, 51102 and 413, that added together give a palindrome (51515).

The spelling of 51102413 in words is "fifty-one million, one hundred two thousand, four hundred thirteen".