551993148 has 144 divisors (see below), whose sum is σ = 1638436800. Its totient is φ = 153446400.

The previous prime is 551993137. The next prime is 551993153. The reversal of 551993148 is 841399155.

551993148 is a `hidden beast` number, since 5 + 519 + 93 + 1 + 48 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2290308 + ... + 2290548.

Almost surely, 2^551993148 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551993148, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (819218400).

551993148 is an abundant number, since it is smaller than the sum of its proper divisors (1086443652).

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

551993148 is a wasteful number, since it uses less digits than its factorization.

551993148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468 (or 463 counting only the distinct ones).

The product of its digits is 194400, while the sum is 45.

The square root of 551993148 is about 23494.5344282452. The cubic root of 551993148 is about 820.3097917320.

The spelling of 551993148 in words is "five hundred fifty-one million, nine hundred ninety-three thousand, one hundred forty-eight".