1005000054550 has 24 divisors (see below), whose sum is σ = 1873961735112. Its totient is φ = 400997520000.

The previous prime is 1005000054533. The next prime is 1005000054557. The reversal of 1005000054550 is 554500005001.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1005000054557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25042296 + ... + 25082395.

It is an arithmetic number, because the mean of its divisors is an integer number (78081738963).

Almost surely, 2^{1005000054550} is an apocalyptic number.

1005000054550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1005000054550 is a deficient number, since it is larger than the sum of its proper divisors (868961680562).

1005000054550 is a wasteful number, since it uses less digits than its factorization.

1005000054550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50125104 (or 50125099 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 25.

Adding to 1005000054550 its reverse (554500005001), we get a palindrome (1559500059551).

The spelling of 1005000054550 in words is "one trillion, five billion, fifty-four thousand, five hundred fifty".