551940480 has 672 divisors, whose sum is σ = 2448232560. Its totient is φ = 116453376.

The previous prime is 551940449. The next prime is 551940503. The reversal of 551940480 is 84049155.

It is a tau number, because it is divible by the number of its divisors (672).

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 polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 42456954 + ... + 42456966.

Almost surely, 2^551940480 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 551940480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1224116280).

551940480 is an abundant number, since it is smaller than the sum of its proper divisors (1896292080).

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

551940480 is an equidigital number, since it uses as much as digits as its factorization.

551940480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70 (or 30 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 551940480 is about 23493.4135450768. The cubic root of 551940480 is about 820.2837011604.

The spelling of 551940480 in words is "five hundred fifty-one million, nine hundred forty thousand, four hundred eighty".