117562381 has 2 divisors, whose sum is σ = 117562382. Its totient is φ = 117562380.

The previous prime is 117562309. The next prime is 117562399. The reversal of 117562381 is 183265711.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67732900 + 49829481 = 8230^2 + 7059^2 .

It is an emirp because it is prime and its reverse (183265711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 117562381 - 2⁹ = 117561869 is a prime.

It is a super-2 number, since 2×117562381² = 27641826852778322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117566381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58781190 + 58781191.

It is an arithmetic number, because the mean of its divisors is an integer number (58781191).

Almost surely, 2^117562381 is an apocalyptic number.

It is an amenable number.

117562381 is a deficient number, since it is larger than the sum of its proper divisors (1).

117562381 is an equidigital number, since it uses as much as digits as its factorization.

117562381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 34.

The square root of 117562381 is about 10842.6187334979. The cubic root of 117562381 is about 489.8797164148.

The spelling of 117562381 in words is "one hundred seventeen million, five hundred sixty-two thousand, three hundred eighty-one".