551922380 has 12 divisors (see below), whose sum is σ = 1159037040. Its totient is φ = 220768944.

The previous prime is 551922379. The next prime is 551922383. The reversal of 551922380 is 83229155.

It is a self number, because there is not a number n which added to its sum of digits gives 551922380.

It is not an unprimeable number, because it can be changed into a prime (551922383) 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, 13798040 + ... + 13798079.

It is an arithmetic number, because the mean of its divisors is an integer number (96586420).

Almost surely, 2^551922380 is an apocalyptic number.

It is an amenable number.

551922380 is an abundant number, since it is smaller than the sum of its proper divisors (607114660).

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

551922380 is a wasteful number, since it uses less digits than its factorization.

551922380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27596128 (or 27596126 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 551922380 is about 23493.0283275699. The cubic root of 551922380 is about 820.2747344343.

The spelling of 551922380 in words is "five hundred fifty-one million, nine hundred twenty-two thousand, three hundred eighty".