2051620201 has 4 divisors (see below), whose sum is σ = 2064206992. Its totient is φ = 2039033412.

The previous prime is 2051620183. The next prime is 2051620223. The reversal of 2051620201 is 1020261502.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2051620201 - 2²⁵ = 2018065769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2051620261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6293151 + ... + 6293476.

It is an arithmetic number, because the mean of its divisors is an integer number (516051748).

Almost surely, 2^2051620201 is an apocalyptic number.

It is an amenable number.

2051620201 is a deficient number, since it is larger than the sum of its proper divisors (12586791).

2051620201 is a wasteful number, since it uses less digits than its factorization.

2051620201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12586790.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 2051620201 is about 45294.8142837566. The cubic root of 2051620201 is about 1270.6686707528.

Adding to 2051620201 its reverse (1020261502), we get a palindrome (3071881703).

The spelling of 2051620201 in words is "two billion, fifty-one million, six hundred twenty thousand, two hundred one".