5540645 has 16 divisors (see below), whose sum is σ = 7318080. Its totient is φ = 3993600.

The previous prime is 5540641. The next prime is 5540659. The reversal of 5540645 is 5460455.

5540645 = 1358² + 1359² + 1360².

It is not a de Polignac number, because 5540645 - 2² = 5540641 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5540641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6821 + ... + 7589.

It is an arithmetic number, because the mean of its divisors is an integer number (457380).

Almost surely, 2^5540645 is an apocalyptic number.

5540645 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

5540645 is a deficient number, since it is larger than the sum of its proper divisors (1777435).

5540645 is a wasteful number, since it uses less digits than its factorization.

5540645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 916.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 5540645 is about 2353.8574723207. The cubic root of 5540645 is about 176.9511712692.

The spelling of 5540645 in words is "five million, five hundred forty thousand, six hundred forty-five".