51553326 has 16 divisors (see below), whose sum is σ = 112480128. Its totient is φ = 15622200.

The previous prime is 51553309. The next prime is 51553343. The reversal of 51553326 is 62335515.

It is an interprime number because it is at equal distance from previous prime (51553309) and next prime (51553343).

It is a junction number, because it is equal to n+sod(n) for n = 51553293 and 51553302.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 390490 + ... + 390621.

It is an arithmetic number, because the mean of its divisors is an integer number (7030008).

Almost surely, 2^51553326 is an apocalyptic number.

51553326 is an abundant number, since it is smaller than the sum of its proper divisors (60926802).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51553326 is a wasteful number, since it uses less digits than its factorization.

51553326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781127.

The product of its digits is 13500, while the sum is 30.

The square root of 51553326 is about 7180.0644843901. The cubic root of 51553326 is about 372.1793129055.

The spelling of 51553326 in words is "fifty-one million, five hundred fifty-three thousand, three hundred twenty-six".