5251555550505 has 32 divisors (see below), whose sum is σ = 9189210354048. Its totient is φ = 2539859072000.

The previous prime is 5251555550491. The next prime is 5251555550551. The reversal of 5251555550505 is 5050555551525.

It is a happy number.

It is not a de Polignac number, because 5251555550505 - 2¹¹ = 5251555548457 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39619134 + ... + 39751463.

It is an arithmetic number, because the mean of its divisors is an integer number (287162823564).

Almost surely, 2^{5251555550505} is an apocalyptic number.

5251555550505 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

5251555550505 is a deficient number, since it is larger than the sum of its proper divisors (3937654803543).

5251555550505 is a wasteful number, since it uses less digits than its factorization.

5251555550505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79371017.

The product of its (nonzero) digits is 3906250, while the sum is 48.

The spelling of 5251555550505 in words is "five trillion, two hundred fifty-one billion, five hundred fifty-five million, five hundred fifty thousand, five hundred five".