55005005050 has 24 divisors (see below), whose sum is σ = 102567052476. Its totient is φ = 21946573440.

The previous prime is 55005005047. The next prime is 55005005063. The reversal of 55005005050 is 5050050055.

It can be written as a sum of positive squares in 6 ways, for example, as 34283114649 + 20721890401 = 185157^2 + 143951^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1365667 + ... + 1405366.

Almost surely, 2^55005005050 is an apocalyptic number.

55005005050 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55005005050 is a deficient number, since it is larger than the sum of its proper divisors (47562047426).

55005005050 is a wasteful number, since it uses less digits than its factorization.

55005005050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2771442 (or 2771437 counting only the distinct ones).

The product of its (nonzero) digits is 3125, while the sum is 25.

The spelling of 55005005050 in words is "fifty-five billion, five million, five thousand, fifty".