75215055 has 32 divisors (see below), whose sum is σ = 128412864. Its totient is φ = 37462016.

The previous prime is 75215017. The next prime is 75215059. The reversal of 75215055 is 55051257.

It is not a de Polignac number, because 75215055 - 2¹¹ = 75213007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75215059) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33859 + ... + 36011.

It is an arithmetic number, because the mean of its divisors is an integer number (4012902).

Almost surely, 2^75215055 is an apocalyptic number.

75215055 is a deficient number, since it is larger than the sum of its proper divisors (53197809).

75215055 is a wasteful number, since it uses less digits than its factorization.

75215055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2315.

The product of its (nonzero) digits is 8750, while the sum is 30.

The square root of 75215055 is about 8672.6613562389. The cubic root of 75215055 is about 422.1190244737.

The spelling of 75215055 in words is "seventy-five million, two hundred fifteen thousand, fifty-five".