55440875 has 16 divisors (see below), whose sum is σ = 79075776. Its totient is φ = 38016000.

The previous prime is 55440863. The next prime is 55440877. The reversal of 55440875 is 57804455.

55440875 = 603² + 604² + ... + 727².

It is not a de Polignac number, because 55440875 - 2¹⁸ = 55178731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55440877) 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, 30806 + ... + 32555.

It is an arithmetic number, because the mean of its divisors is an integer number (4942236).

Almost surely, 2^55440875 is an apocalyptic number.

55440875 is a deficient number, since it is larger than the sum of its proper divisors (23634901).

55440875 is an equidigital number, since it uses as much as digits as its factorization.

55440875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63383 (or 63373 counting only the distinct ones).

The product of its (nonzero) digits is 112000, while the sum is 38.

The square root of 55440875 is about 7445.8629452871. The cubic root of 55440875 is about 381.3086803881.

The spelling of 55440875 in words is "fifty-five million, four hundred forty thousand, eight hundred seventy-five".