551220960 has 48 divisors (see below), whose sum is σ = 1736347536. Its totient is φ = 146992128.

The previous prime is 551220959. The next prime is 551220977. The reversal of 551220960 is 69022155.

It is a happy number.

551220960 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 573709 + ... + 574668.

It is an arithmetic number, because the mean of its divisors is an integer number (36173907).

Almost surely, 2^551220960 is an apocalyptic number.

It is an amenable number.

551220960 is an abundant number, since it is smaller than the sum of its proper divisors (1185126576).

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

551220960 is a wasteful number, since it uses less digits than its factorization.

551220960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1148395 (or 1148387 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 551220960 is about 23478.0953230879. The cubic root of 551220960 is about 819.9271004001.

The spelling of 551220960 in words is "five hundred fifty-one million, two hundred twenty thousand, nine hundred sixty".