2545961 has 12 divisors (see below), whose sum is σ = 2858436. Its totient is φ = 2265120.

The previous prime is 2545927. The next prime is 2545967. The reversal of 2545961 is 1695452.

It is a happy number.

2545961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1771561 + 774400 = 1331^2 + 880^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2545961 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2545967) 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 in 11 ways as a sum of consecutive naturals, for example, 6215 + ... + 6611.

It is an arithmetic number, because the mean of its divisors is an integer number (238203).

2^2545961 is an apocalyptic number.

It is an amenable number.

2545961 is a deficient number, since it is larger than the sum of its proper divisors (312475).

2545961 is a wasteful number, since it uses less digits than its factorization.

2545961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472 (or 461 counting only the distinct ones).

The product of its digits is 10800, while the sum is 32.

The square root of 2545961 is about 1595.6067811337. The cubic root of 2545961 is about 136.5475510467.

The spelling of 2545961 in words is "two million, five hundred forty-five thousand, nine hundred sixty-one".