117950551 has 2 divisors, whose sum is σ = 117950552. Its totient is φ = 117950550.

The previous prime is 117950533. The next prime is 117950557. The reversal of 117950551 is 155059711.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 117950551 - 2⁵ = 117950519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117950557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58975275 + 58975276.

It is an arithmetic number, because the mean of its divisors is an integer number (58975276).

Almost surely, 2^117950551 is an apocalyptic number.

117950551 is a deficient number, since it is larger than the sum of its proper divisors (1).

117950551 is an equidigital number, since it uses as much as digits as its factorization.

117950551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7875, while the sum is 34.

The square root of 117950551 is about 10860.5041779836. The cubic root of 117950551 is about 490.4182892225.

The spelling of 117950551 in words is "one hundred seventeen million, nine hundred fifty thousand, five hundred fifty-one".