75311145 has 96 divisors (see below), whose sum is σ = 164166912. Its totient is φ = 31090176.

The previous prime is 75311113. The next prime is 75311147. The reversal of 75311145 is 54111357.

It is not a de Polignac number, because 75311145 - 2⁵ = 75311113 is a prime.

It is a super-2 number, since 2×75311145² = 11343537122422050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (75311147) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 216862 + ... + 217208.

It is an arithmetic number, because the mean of its divisors is an integer number (1710072).

Almost surely, 2^75311145 is an apocalyptic number.

It is an amenable number.

75311145 is an abundant number, since it is smaller than the sum of its proper divisors (88855767).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

75311145 is a wasteful number, since it uses less digits than its factorization.

75311145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431 (or 428 counting only the distinct ones).

The product of its digits is 2100, while the sum is 27.

The square root of 75311145 is about 8678.1994100159. The cubic root of 75311145 is about 422.2987055070.

The spelling of 75311145 in words is "seventy-five million, three hundred eleven thousand, one hundred forty-five".