75220555 has 8 divisors (see below), whose sum is σ = 90653472. Its totient is φ = 59917248.

The previous prime is 75220553. The next prime is 75220571. The reversal of 75220555 is 55502257.

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 75220555 - 2¹ = 75220553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75220553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31119 + ... + 33448.

It is an arithmetic number, because the mean of its divisors is an integer number (11331684).

Almost surely, 2^75220555 is an apocalyptic number.

75220555 is a deficient number, since it is larger than the sum of its proper divisors (15432917).

75220555 is a wasteful number, since it uses less digits than its factorization.

75220555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64805.

The product of its (nonzero) digits is 17500, while the sum is 31.

The square root of 75220555 is about 8672.9784388064. The cubic root of 75220555 is about 422.1293131854.

The spelling of 75220555 in words is "seventy-five million, two hundred twenty thousand, five hundred fifty-five".