117521233 has 2 divisors, whose sum is σ = 117521234. Its totient is φ = 117521232.

The previous prime is 117521227. The next prime is 117521263. The reversal of 117521233 is 332125711.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113060689 + 4460544 = 10633^2 + 2112^2 .

It is an emirp because it is prime and its reverse (332125711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 117521233 - 2¹³ = 117513041 is a prime.

It is a super-2 number, since 2×117521233² = 27622480411680578, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 117521198 and 117521207.

It is not a weakly prime, because it can be changed into another prime (117521263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58760616 + 58760617.

It is an arithmetic number, because the mean of its divisors is an integer number (58760617).

Almost surely, 2^117521233 is an apocalyptic number.

It is an amenable number.

117521233 is a deficient number, since it is larger than the sum of its proper divisors (1).

117521233 is an equidigital number, since it uses as much as digits as its factorization.

117521233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1260, while the sum is 25.

The square root of 117521233 is about 10840.7210553542. The cubic root of 117521233 is about 489.8225554913.

Adding to 117521233 its reverse (332125711), we get a palindrome (449646944).

The spelling of 117521233 in words is "one hundred seventeen million, five hundred twenty-one thousand, two hundred thirty-three".