117554261 has 4 divisors (see below), whose sum is σ = 128241024. Its totient is φ = 106867500.

The previous prime is 117554249. The next prime is 117554287. The reversal of 117554261 is 162455711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 162455711 = 11 ⋅14768701.

It is a cyclic number.

It is not a de Polignac number, because 117554261 - 2¹⁸ = 117292117 is a prime.

It is a super-2 number, since 2×117554261² = 27638008558512242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117554161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5343365 + ... + 5343386.

It is an arithmetic number, because the mean of its divisors is an integer number (32060256).

Almost surely, 2^117554261 is an apocalyptic number.

117554261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

117554261 is a deficient number, since it is larger than the sum of its proper divisors (10686763).

117554261 is a wasteful number, since it uses less digits than its factorization.

117554261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10686762.

The product of its digits is 8400, while the sum is 32.

The square root of 117554261 is about 10842.2442787460. The cubic root of 117554261 is about 489.8684375379.

The spelling of 117554261 in words is "one hundred seventeen million, five hundred fifty-four thousand, two hundred sixty-one".