2551545 has 12 divisors (see below), whose sum is σ = 4422756. Its totient is φ = 1360800.

The previous prime is 2551543. The next prime is 2551559. The reversal of 2551545 is 5451552.

It can be written as a sum of positive squares in 2 ways, for example, as 1279161 + 1272384 = 1131^2 + 1128^2 .

It is not a de Polignac number, because 2551545 - 2¹ = 2551543 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2551543) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28306 + ... + 28395.

It is an arithmetic number, because the mean of its divisors is an integer number (368563).

2^2551545 is an apocalyptic number.

It is an amenable number.

2551545 is a deficient number, since it is larger than the sum of its proper divisors (1871211).

2551545 is a wasteful number, since it uses less digits than its factorization.

2551545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56712 (or 56709 counting only the distinct ones).

The product of its digits is 5000, while the sum is 27.

The square root of 2551545 is about 1597.3556272790. The cubic root of 2551545 is about 136.6473070601.

The spelling of 2551545 in words is "two million, five hundred fifty-one thousand, five hundred forty-five".