2087957261 has 8 divisors (see below), whose sum is σ = 2249120664. Its totient is φ = 1926872640.

The previous prime is 2087957231. The next prime is 2087957269. The reversal of 2087957261 is 1627597802.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 15625 + 2087941636 = 125^2 + 45694^2 .

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 2087957261 - 2⁶ = 2087957197 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 (2087957269) 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, 42695 + ... + 77451.

It is an arithmetic number, because the mean of its divisors is an integer number (281140083).

Almost surely, 2^2087957261 is an apocalyptic number.

It is an amenable number.

2087957261 is a deficient number, since it is larger than the sum of its proper divisors (161163403).

2087957261 is a wasteful number, since it uses less digits than its factorization.

2087957261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39391.

The product of its (nonzero) digits is 423360, while the sum is 47.

The square root of 2087957261 is about 45694.1709739875. The cubic root of 2087957261 is about 1278.1265849587.

The spelling of 2087957261 in words is "two billion, eighty-seven million, nine hundred fifty-seven thousand, two hundred sixty-one".