117855550 has 24 divisors (see below), whose sum is σ = 219512736. Its totient is φ = 47077440.

The previous prime is 117855547. The next prime is 117855553. The reversal of 117855550 is 55558711.

It is an interprime number because it is at equal distance from previous prime (117855547) and next prime (117855553).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117855553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54082 + ... + 56218.

It is an arithmetic number, because the mean of its divisors is an integer number (9146364).

Almost surely, 2^117855550 is an apocalyptic number.

117855550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

117855550 is a deficient number, since it is larger than the sum of its proper divisors (101657186).

117855550 is a wasteful number, since it uses less digits than its factorization.

117855550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3252 (or 3247 counting only the distinct ones).

The product of its (nonzero) digits is 35000, while the sum is 37.

The square root of 117855550 is about 10856.1296049743. The cubic root of 117855550 is about 490.2865878683.

The spelling of 117855550 in words is "one hundred seventeen million, eight hundred fifty-five thousand, five hundred fifty".