2157760101 has 16 divisors (see below), whose sum is σ = 3329638400. Its totient is φ = 1217397168.

The previous prime is 2157760091. The next prime is 2157760123. The reversal of 2157760101 is 1010677512.

It is not a de Polignac number, because 2157760101 - 2²⁵ = 2124205669 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 (2157760201) 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, 648661 + ... + 651978.

It is an arithmetic number, because the mean of its divisors is an integer number (208102400).

Almost surely, 2^2157760101 is an apocalyptic number.

2157760101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2157760101 is a deficient number, since it is larger than the sum of its proper divisors (1171878299).

2157760101 is a wasteful number, since it uses less digits than its factorization.

2157760101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1300728.

The product of its (nonzero) digits is 2940, while the sum is 30.

The square root of 2157760101 is about 46451.6964275795. The cubic root of 2157760101 is about 1292.2138339133.

The spelling of 2157760101 in words is "two billion, one hundred fifty-seven million, seven hundred sixty thousand, one hundred one".