2520422161 has 8 divisors (see below), whose sum is σ = 2612169000. Its totient is φ = 2428997760.

The previous prime is 2520422153. The next prime is 2520422189. The reversal of 2520422161 is 1612240252.

It can be written as a sum of positive squares in 4 ways, for example, as 746327761 + 1774094400 = 27319^2 + 42120^2 .

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 2520422161 - 2³ = 2520422153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2520425161) 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, 64636 + ... + 96013.

It is an arithmetic number, because the mean of its divisors is an integer number (326521125).

Almost surely, 2^2520422161 is an apocalyptic number.

It is an amenable number.

2520422161 is a deficient number, since it is larger than the sum of its proper divisors (91746839).

2520422161 is a wasteful number, since it uses less digits than its factorization.

2520422161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161219.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 2520422161 is about 50203.8062401647. The cubic root of 2520422161 is about 1360.8944089565.

The spelling of 2520422161 in words is "two billion, five hundred twenty million, four hundred twenty-two thousand, one hundred sixty-one".