2553945 has 8 divisors (see below), whose sum is σ = 4086336. Its totient is φ = 1362096.

The previous prime is 2553937. The next prime is 2553949. The reversal of 2553945 is 5493552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2553945 - 2³ = 2553937 is a prime.

It is a d-powerful number, because it can be written as 2⁹ + 5³ + 5⁵ + 3¹² + 9² + 4⁸ + 5⁹ .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2553949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85117 + ... + 85146.

It is an arithmetic number, because the mean of its divisors is an integer number (510792).

2^2553945 is an apocalyptic number.

It is an amenable number.

2553945 is a deficient number, since it is larger than the sum of its proper divisors (1532391).

2553945 is a wasteful number, since it uses less digits than its factorization.

2553945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170271.

The product of its digits is 27000, while the sum is 33.

The square root of 2553945 is about 1598.1066923081. The cubic root of 2553945 is about 136.6901374192.

The spelling of 2553945 in words is "two million, five hundred fifty-three thousand, nine hundred forty-five".