75117455 has 8 divisors (see below), whose sum is σ = 103018272. Its totient is φ = 51509088.

The previous prime is 75117439. The next prime is 75117463. The reversal of 75117455 is 55471157.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 75117455 - 2⁴ = 75117439 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 2146213 = 75117455 / (7 + 5 + 1 + 1 + 7 + 4 + 5 + 5).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1073072 + ... + 1073141.

It is an arithmetic number, because the mean of its divisors is an integer number (12877284).

Almost surely, 2^75117455 is an apocalyptic number.

75117455 is a deficient number, since it is larger than the sum of its proper divisors (27900817).

75117455 is a wasteful number, since it uses less digits than its factorization.

75117455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2146225.

The product of its digits is 24500, while the sum is 35.

The square root of 75117455 is about 8667.0326525288. The cubic root of 75117455 is about 421.9363631271.

The spelling of 75117455 in words is "seventy-five million, one hundred seventeen thousand, four hundred fifty-five".