5551540 has 12 divisors (see below), whose sum is σ = 11658276. Its totient is φ = 2220608.

The previous prime is 5551531. The next prime is 5551583. The reversal of 5551540 is 451555.

It can be written as a sum of positive squares in 2 ways, for example, as 3111696 + 2439844 = 1764^2 + 1562^2 .

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138769 + ... + 138808.

It is an arithmetic number, because the mean of its divisors is an integer number (971523).

Almost surely, 2^5551540 is an apocalyptic number.

It is an amenable number.

5551540 is an abundant number, since it is smaller than the sum of its proper divisors (6106736).

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

5551540 is a wasteful number, since it uses less digits than its factorization.

5551540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277586 (or 277584 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 25.

The square root of 5551540 is about 2356.1706220051. The cubic root of 5551540 is about 177.0670796001.

It can be divided in two parts, 55515 and 40, that added together give a palindrome (55555).

The spelling of 5551540 in words is "five million, five hundred fifty-one thousand, five hundred forty".