2156552101 has 8 divisors (see below), whose sum is σ = 2375896608. Its totient is φ = 1941090000.

The previous prime is 2156552081. The next prime is 2156552161. The reversal of 2156552101 is 1012556512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2156552101 - 2⁷ = 2156551973 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2156552101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156552161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 969435 + ... + 971656.

It is an arithmetic number, because the mean of its divisors is an integer number (296987076).

Almost surely, 2^2156552101 is an apocalyptic number.

It is an amenable number.

2156552101 is a deficient number, since it is larger than the sum of its proper divisors (219344507).

2156552101 is a wasteful number, since it uses less digits than its factorization.

2156552101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1941203.

The product of its (nonzero) digits is 3000, while the sum is 28.

The square root of 2156552101 is about 46438.6918528074. The cubic root of 2156552101 is about 1291.9726446505.

The spelling of 2156552101 in words is "two billion, one hundred fifty-six million, five hundred fifty-two thousand, one hundred one".