551375240 has 64 divisors (see below), whose sum is σ = 1367150400. Its totient is φ = 198842112.

The previous prime is 551375239. The next prime is 551375267. The reversal of 551375240 is 42573155.

It is a junction number, because it is equal to n+sod(n) for n = 551375197 and 551375206.

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, 10031 + ... + 34689.

It is an arithmetic number, because the mean of its divisors is an integer number (21361725).

Almost surely, 2^551375240 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 551375240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (683575200).

551375240 is an abundant number, since it is smaller than the sum of its proper divisors (815775160).

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

551375240 is a wasteful number, since it uses less digits than its factorization.

551375240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24726 (or 24722 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 551375240 is about 23481.3807089788. The cubic root of 551375240 is about 820.0035891177.

The spelling of 551375240 in words is "five hundred fifty-one million, three hundred seventy-five thousand, two hundred forty".