2154207061 has 16 divisors (see below), whose sum is σ = 2285568000. Its totient is φ = 2024708400.

The previous prime is 2154207059. The next prime is 2154207067. The reversal of 2154207061 is 1607024512.

It is not a de Polignac number, because 2154207061 - 2¹ = 2154207059 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 (2154207067) 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, 2173276 + ... + 2174266.

It is an arithmetic number, because the mean of its divisors is an integer number (142848000).

Almost surely, 2^2154207061 is an apocalyptic number.

It is an amenable number.

2154207061 is a deficient number, since it is larger than the sum of its proper divisors (131360939).

2154207061 is a wasteful number, since it uses less digits than its factorization.

2154207061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1800.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 2154207061 is about 46413.4362119419. The cubic root of 2154207061 is about 1291.5041767396.

The spelling of 2154207061 in words is "two billion, one hundred fifty-four million, two hundred seven thousand, sixty-one".