2051650 has 24 divisors (see below), whose sum is σ = 3922740. Its totient is φ = 797760.

The previous prime is 2051641. The next prime is 2051653. The reversal of 2051650 is 561502.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 546121 + 1505529 = 739^2 + 1227^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2051653) 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, 1296 + ... + 2404.

2^2051650 is an apocalyptic number.

2051650 is a deficient number, since it is larger than the sum of its proper divisors (1871090).

2051650 is a wasteful number, since it uses less digits than its factorization.

2051650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1158 (or 1153 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 2051650 is about 1432.3581954246. The cubic root of 2051650 is about 127.0674822715.

It can be divided in two parts, 2051 and 650, that added together give a triangular number (2701 = T₇₃).

The spelling of 2051650 in words is "two million, fifty-one thousand, six hundred fifty".