551955680 has 24 divisors (see below), whose sum is σ = 1303995672. Its totient is φ = 220782208.

The previous prime is 551955671. The next prime is 551955683. The reversal of 551955680 is 86559155.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551955683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1724702 + ... + 1725021.

It is an arithmetic number, because the mean of its divisors is an integer number (54333153).

Almost surely, 2^551955680 is an apocalyptic number.

It is an amenable number.

551955680 is an abundant number, since it is smaller than the sum of its proper divisors (752039992).

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

551955680 is a wasteful number, since it uses less digits than its factorization.

551955680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3449738 (or 3449730 counting only the distinct ones).

The product of its (nonzero) digits is 270000, while the sum is 44.

The square root of 551955680 is about 23493.7370377724. The cubic root of 551955680 is about 820.2912310773.

The spelling of 551955680 in words is "five hundred fifty-one million, nine hundred fifty-five thousand, six hundred eighty".