551001142240 has 48 divisors (see below), whose sum is σ = 1305139143168. Its totient is φ = 219824974336.

The previous prime is 551001142201. The next prime is 551001142277. The reversal of 551001142240 is 42241100155.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4434487 + ... + 4557046.

It is an arithmetic number, because the mean of its divisors is an integer number (27190398816).

Almost surely, 2^551001142240 is an apocalyptic number.

It is an amenable number.

551001142240 is an abundant number, since it is smaller than the sum of its proper divisors (754138000928).

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

551001142240 is a wasteful number, since it uses less digits than its factorization.

551001142240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8991931 (or 8991923 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 551001142240 its reverse (42241100155), we get a palindrome (593242242395).

The spelling of 551001142240 in words is "five hundred fifty-one billion, one million, one hundred forty-two thousand, two hundred forty".