2051243001 has 16 divisors (see below), whose sum is σ = 3217636800. Its totient is φ = 1287054144.

The previous prime is 2051242969. The next prime is 2051243027. The reversal of 2051243001 is 1003421502.

It is not a de Polignac number, because 2051243001 - 2⁵ = 2051242969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2051243101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2234011 + ... + 2234928.

It is an arithmetic number, because the mean of its divisors is an integer number (201102300).

Almost surely, 2^2051243001 is an apocalyptic number.

It is an amenable number.

2051243001 is a deficient number, since it is larger than the sum of its proper divisors (1166393799).

2051243001 is a wasteful number, since it uses less digits than its factorization.

2051243001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4468965 (or 4468959 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 2051243001 is about 45290.6502602910. The cubic root of 2051243001 is about 1270.5907931809.

Adding to 2051243001 its reverse (1003421502), we get a palindrome (3054664503).

The spelling of 2051243001 in words is "two billion, fifty-one million, two hundred forty-three thousand, one".