5651550 has 72 divisors (see below), whose sum is σ = 16007160. Its totient is φ = 1425600.

The previous prime is 5651539. The next prime is 5651557. The reversal of 5651550 is 551565.

5651550 is a `hidden beast` number, since 5 + 651 + 5 + 5 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5651557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8220 + ... + 8880.

Almost surely, 2^5651550 is an apocalyptic number.

5651550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 5651550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8003580).

5651550 is an abundant number, since it is smaller than the sum of its proper divisors (10355610).

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

5651550 is a wasteful number, since it uses less digits than its factorization.

5651550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698 (or 690 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 27.

The square root of 5651550 is about 2377.2988873930. The cubic root of 5651550 is about 178.1240350825.

It can be divided in two parts, 56515 and 50, that added together give a palindrome (56565).

The spelling of 5651550 in words is "five million, six hundred fifty-one thousand, five hundred fifty".