2491523201 has 2 divisors, whose sum is σ = 2491523202. Its totient is φ = 2491523200.

The previous prime is 2491523159. The next prime is 2491523207. The reversal of 2491523201 is 1023251942.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1888771600 + 602751601 = 43460^2 + 24551^2 .

It is a cyclic number.

It is not a de Polignac number, because 2491523201 - 2²² = 2487328897 is a prime.

It is a super-2 number, since 2×2491523201² = 12415375722242572802, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2491523207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1245761600 + 1245761601.

It is an arithmetic number, because the mean of its divisors is an integer number (1245761601).

Almost surely, 2^2491523201 is an apocalyptic number.

It is an amenable number.

2491523201 is a deficient number, since it is larger than the sum of its proper divisors (1).

2491523201 is an equidigital number, since it uses as much as digits as its factorization.

2491523201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 2491523201 is about 49915.1600317980. The cubic root of 2491523201 is about 1355.6730997658.

The spelling of 2491523201 in words is "two billion, four hundred ninety-one million, five hundred twenty-three thousand, two hundred one".