551554560 has 240 divisors, whose sum is σ = 1964847456. Its totient is φ = 142884864.

The previous prime is 551554547. The next prime is 551554583. The reversal of 551554560 is 65455155.

551554560 is a `hidden beast` number, since 5 + 51 + 5 + 545 + 60 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 852157 + ... + 852803.

Almost surely, 2^551554560 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 551554560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (982423728).

551554560 is an abundant number, since it is smaller than the sum of its proper divisors (1413292896).

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

551554560 is a wasteful number, since it uses less digits than its factorization.

551554560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713 (or 694 counting only the distinct ones).

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

The square root of 551554560 is about 23485.1987430381. The cubic root of 551554560 is about 820.0924742031.

The spelling of 551554560 in words is "five hundred fifty-one million, five hundred fifty-four thousand, five hundred sixty".