2153020061 has 4 divisors (see below), whose sum is σ = 2167278624. Its totient is φ = 2138761500.

The previous prime is 2153020057. The next prime is 2153020073. The reversal of 2153020061 is 1600203512.

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 2153020061 - 2² = 2153020057 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2153020031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7129055 + ... + 7129356.

It is an arithmetic number, because the mean of its divisors is an integer number (541819656).

Almost surely, 2^2153020061 is an apocalyptic number.

It is an amenable number.

2153020061 is a deficient number, since it is larger than the sum of its proper divisors (14258563).

2153020061 is a wasteful number, since it uses less digits than its factorization.

2153020061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14258562.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 2153020061 is about 46400.6472045380. The cubic root of 2153020061 is about 1291.2669205131.

Adding to 2153020061 its reverse (1600203512), we get a palindrome (3753223573).

The spelling of 2153020061 in words is "two billion, one hundred fifty-three million, twenty thousand, sixty-one".