2505554 has 4 divisors (see below), whose sum is σ = 3758334. Its totient is φ = 1252776.

The previous prime is 2505541. The next prime is 2505557. The reversal of 2505554 is 4555052.

2505554 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2036329 + 469225 = 1427^2 + 685^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2505557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626387 + ... + 626390.

2^2505554 is an apocalyptic number.

2505554 is a deficient number, since it is larger than the sum of its proper divisors (1252780).

2505554 is a wasteful number, since it uses less digits than its factorization.

2505554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1252779.

The product of its (nonzero) digits is 5000, while the sum is 26.

The square root of 2505554 is about 1582.8941847136. The cubic root of 2505554 is about 135.8213123298.

The spelling of 2505554 in words is "two million, five hundred five thousand, five hundred fifty-four".