2251247377 has 2 divisors, whose sum is σ = 2251247378. Its totient is φ = 2251247376.

The previous prime is 2251247371. The next prime is 2251247417. The reversal of 2251247377 is 7737421522.

It is an a-pointer prime, because the next prime (2251247417) can be obtained adding 2251247377 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2155187776 + 96059601 = 46424^2 + 9801^2 .

It is a cyclic number.

It is not a de Polignac number, because 2251247377 - 2²³ = 2242858769 is a prime.

It is a super-2 number, since 2×2251247377² = 10136229504898760258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2251247371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1125623688 + 1125623689.

It is an arithmetic number, because the mean of its divisors is an integer number (1125623689).

Almost surely, 2^2251247377 is an apocalyptic number.

It is an amenable number.

2251247377 is a deficient number, since it is larger than the sum of its proper divisors (1).

2251247377 is an equidigital number, since it uses as much as digits as its factorization.

2251247377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 164640, while the sum is 40.

The square root of 2251247377 is about 47447.3115887507. The cubic root of 2251247377 is about 1310.6128044092.

Adding to 2251247377 its reverse (7737421522), we get a palindrome (9988668899).

The spelling of 2251247377 in words is "two billion, two hundred fifty-one million, two hundred forty-seven thousand, three hundred seventy-seven".