1351505252550 has 48 divisors (see below), whose sum is σ = 3356514646992. Its totient is φ = 359887248000.

The previous prime is 1351505252549. The next prime is 1351505252567. The reversal of 1351505252550 is 552525051531.

It is a junction number, because it is equal to n+sod(n) for n = 1351505252499 and 1351505252508.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6321409 + ... + 6531708.

It is an arithmetic number, because the mean of its divisors is an integer number (69927388479).

Almost surely, 2^{1351505252550} is an apocalyptic number.

1351505252550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1351505252550 is an abundant number, since it is smaller than the sum of its proper divisors (2005009394442).

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

1351505252550 is a wasteful number, since it uses less digits than its factorization.

1351505252550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12853833 (or 12853828 counting only the distinct ones).

The product of its (nonzero) digits is 187500, while the sum is 39.

The spelling of 1351505252550 in words is "one trillion, three hundred fifty-one billion, five hundred five million, two hundred fifty-two thousand, five hundred fifty".