551972860 has 48 divisors (see below), whose sum is σ = 1213160256. Its totient is φ = 210557952.

The previous prime is 551972851. The next prime is 551972893. The reversal of 551972860 is 68279155.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169972 + ... + 173188.

It is an arithmetic number, because the mean of its divisors is an integer number (25274172).

Almost surely, 2^551972860 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 551972860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (606580128).

551972860 is an abundant number, since it is smaller than the sum of its proper divisors (661187396).

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

551972860 is a wasteful number, since it uses less digits than its factorization.

551972860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3622 (or 3620 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 43.

The square root of 551972860 is about 23494.1026642858. The cubic root of 551972860 is about 820.2997416985.

The spelling of 551972860 in words is "five hundred fifty-one million, nine hundred seventy-two thousand, eight hundred sixty".