2051245 has 16 divisors (see below), whose sum is σ = 2845440.
Its totient is φ = 1390464.
The previous prime is 2051233. The next prime is 2051249. The reversal of 2051245 is 5421502.
It is a cyclic number.
It is not a de Polignac number, because 2051245 - 29 = 2050733 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2051249) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3321 + ... + 3889.
It is an arithmetic number, because the mean of its divisors is an integer number (177840).
22051245 is an apocalyptic number.
It is an amenable number.
2051245 is a deficient number, since it is larger than the sum of its proper divisors (794195).
2051245 is a wasteful number, since it uses less digits than its factorization.
2051245 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 684.
The product of its (nonzero) digits is 400, while the sum is 19.
The square root of 2051245 is about 1432.2168131955.
The cubic root of 2051245 is about 127.0591205924.
Adding to 2051245 its reverse (5421502), we get a palindrome (7472747).
The spelling of 2051245 in words is "two million, fifty-one thousand, two hundred forty-five".