51021255350 has 48 divisors (see below), whose sum is σ = 106642986912. Its totient is φ = 18019541760.

The previous prime is 51021255347. The next prime is 51021255353. The reversal of 51021255350 is 5355212015.

51021255350 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51021255347) and next prime (51021255353).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51021255353) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1691447 + ... + 1721346.

It is an arithmetic number, because the mean of its divisors is an integer number (2221728894).

Almost surely, 2^51021255350 is an apocalyptic number.

51021255350 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51021255350 is an abundant number, since it is smaller than the sum of its proper divisors (55621731562).

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

51021255350 is a wasteful number, since it uses less digits than its factorization.

51021255350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3412841 (or 3412836 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 29.

Adding to 51021255350 its reverse (5355212015), we get a palindrome (56376467365).

The spelling of 51021255350 in words is "fifty-one billion, twenty-one million, two hundred fifty-five thousand, three hundred fifty".