2051020245 has 32 divisors (see below), whose sum is σ = 3343939200. Its totient is φ = 1073183744.

The previous prime is 2051020243. The next prime is 2051020253. The reversal of 2051020245 is 5420201502.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2051020245 - 2¹ = 2051020243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051020243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 501529 + ... + 505601.

It is an arithmetic number, because the mean of its divisors is an integer number (104498100).

Almost surely, 2^2051020245 is an apocalyptic number.

It is an amenable number.

2051020245 is a deficient number, since it is larger than the sum of its proper divisors (1292918955).

2051020245 is a wasteful number, since it uses less digits than its factorization.

2051020245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4709.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 2051020245 is about 45288.1910104610. The cubic root of 2051020245 is about 1270.5447979854.

Adding to 2051020245 its reverse (5420201502), we get a palindrome (7471221747).

It can be divided in two parts, 20510 and 20245, that added together give a triangular number (40755 = T₂₈₅).

The spelling of 2051020245 in words is "two billion, fifty-one million, twenty thousand, two hundred forty-five".