2521226197 has 8 divisors (see below), whose sum is σ = 2928637952. Its totient is φ = 2125623600.

The previous prime is 2521226179. The next prime is 2521226209. The reversal of 2521226197 is 7916221252.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2521226197 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 (2521226597) 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, 2951829 + ... + 2952682.

It is an arithmetic number, because the mean of its divisors is an integer number (366079744).

Almost surely, 2^2521226197 is an apocalyptic number.

It is an amenable number.

2521226197 is a deficient number, since it is larger than the sum of its proper divisors (407411755).

2521226197 is an equidigital number, since it uses as much as digits as its factorization.

2521226197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5904579.

The product of its digits is 30240, while the sum is 37.

The square root of 2521226197 is about 50211.8133211698. The cubic root of 2521226197 is about 1361.0391058490.

The spelling of 2521226197 in words is "two billion, five hundred twenty-one million, two hundred twenty-six thousand, one hundred ninety-seven".