5781545 has 16 divisors (see below), whose sum is σ = 8650368. Its totient is φ = 3603840.

The previous prime is 5781541. The next prime is 5781553. The reversal of 5781545 is 5451875.

It is not a de Polignac number, because 5781545 - 2² = 5781541 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a d-powerful number, because it can be written as 5 + 7⁸ + 8² + 1 + 5² + 4⁵ + 5⁶ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5781541) 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, 7124 + ... + 7893.

It is an arithmetic number, because the mean of its divisors is an integer number (540648).

Almost surely, 2^5781545 is an apocalyptic number.

5781545 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

5781545 is a deficient number, since it is larger than the sum of its proper divisors (2868823).

5781545 is a wasteful number, since it uses less digits than its factorization.

5781545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15040.

The product of its digits is 28000, while the sum is 35.

The square root of 5781545 is about 2404.4843522053. The cubic root of 5781545 is about 179.4794114648.

The spelling of 5781545 in words is "five million, seven hundred eighty-one thousand, five hundred forty-five".