117437521 has 2 divisors, whose sum is σ = 117437522. Its totient is φ = 117437520.

The previous prime is 117437503. The next prime is 117437539. The reversal of 117437521 is 125734711.

It is a balanced prime because it is at equal distance from previous prime (117437503) and next prime (117437539).

It can be written as a sum of positive squares in only one way, i.e., 115799121 + 1638400 = 10761^2 + 1280^2 .

It is a cyclic number.

It is not a de Polignac number, because 117437521 - 2⁹ = 117437009 is a prime.

It is equal to p_6703942 and since 117437521 and 6703942 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (117437561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58718760 + 58718761.

It is an arithmetic number, because the mean of its divisors is an integer number (58718761).

Almost surely, 2^117437521 is an apocalyptic number.

It is an amenable number.

117437521 is a deficient number, since it is larger than the sum of its proper divisors (1).

117437521 is an equidigital number, since it uses as much as digits as its factorization.

117437521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5880, while the sum is 31.

The square root of 117437521 is about 10836.8593697621. The cubic root of 117437521 is about 489.7062254050.

The spelling of 117437521 in words is "one hundred seventeen million, four hundred thirty-seven thousand, five hundred twenty-one".