2150565261 has 8 divisors (see below), whose sum is σ = 3087991200. Its totient is φ = 1323424752.

The previous prime is 2150565253. The next prime is 2150565269. The reversal of 2150565261 is 1625650512.

It is an interprime number because it is at equal distance from previous prime (2150565253) and next prime (2150565269).

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

It is not a de Polignac number, because 2150565261 - 2³ = 2150565253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2150565269) 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, 27571311 + ... + 27571388.

It is an arithmetic number, because the mean of its divisors is an integer number (385998900).

Almost surely, 2^2150565261 is an apocalyptic number.

It is an amenable number.

2150565261 is a deficient number, since it is larger than the sum of its proper divisors (937425939).

2150565261 is a wasteful number, since it uses less digits than its factorization.

2150565261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55142715.

The product of its (nonzero) digits is 18000, while the sum is 33.

The square root of 2150565261 is about 46374.1874430162. The cubic root of 2150565261 is about 1290.7759810559.

The spelling of 2150565261 in words is "two billion, one hundred fifty million, five hundred sixty-five thousand, two hundred sixty-one".