75212055 has 12 divisors (see below), whose sum is σ = 130367640. Its totient is φ = 40113072.

The previous prime is 75212023. The next prime is 75212057. The reversal of 75212055 is 55021257.

It is a happy number.

It is not a de Polignac number, because 75212055 - 2⁵ = 75212023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75212057) 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, 835645 + ... + 835734.

It is an arithmetic number, because the mean of its divisors is an integer number (10863970).

Almost surely, 2^75212055 is an apocalyptic number.

75212055 is a deficient number, since it is larger than the sum of its proper divisors (55155585).

75212055 is a wasteful number, since it uses less digits than its factorization.

75212055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1671390 (or 1671387 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 27.

The square root of 75212055 is about 8672.4883972249. The cubic root of 75212055 is about 422.1134122377.

The spelling of 75212055 in words is "seventy-five million, two hundred twelve thousand, fifty-five".