551240155350 has 144 divisors (see below), whose sum is σ = 1540687200720. Its totient is φ = 144925200000.

The previous prime is 551240155343. The next prime is 551240155393. The reversal of 551240155350 is 53551042155.

551240155350 is a `hidden beast` number, since 5 + 5 + 12 + 40 + 1 + 553 + 50 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 6764850 + ... + 6845850.

Almost surely, 2^551240155350 is an apocalyptic number.

551240155350 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 551240155350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (770343600360).

551240155350 is an abundant number, since it is smaller than the sum of its proper divisors (989447045370).

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

551240155350 is a wasteful number, since it uses less digits than its factorization.

551240155350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81164 (or 81082 counting only the distinct ones).

The product of its (nonzero) digits is 75000, while the sum is 36.

The spelling of 551240155350 in words is "five hundred fifty-one billion, two hundred forty million, one hundred fifty-five thousand, three hundred fifty".