75140745 has 32 divisors (see below), whose sum is σ = 124760064. Its totient is φ = 38577600.

The previous prime is 75140743. The next prime is 75140749. The reversal of 75140745 is 54704157.

It is not a de Polignac number, because 75140745 - 2¹ = 75140743 is a prime.

It is a super-2 number, since 2×75140745² = 11292263118310050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (75140743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 131310 + ... + 131880.

It is an arithmetic number, because the mean of its divisors is an integer number (3898752).

Almost surely, 2^75140745 is an apocalyptic number.

It is an amenable number.

75140745 is a deficient number, since it is larger than the sum of its proper divisors (49619319).

75140745 is a wasteful number, since it uses less digits than its factorization.

75140745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 893.

The product of its (nonzero) digits is 19600, while the sum is 33.

The square root of 75140745 is about 8668.3761455073. The cubic root of 75140745 is about 421.9799654318.

The spelling of 75140745 in words is "seventy-five million, one hundred forty thousand, seven hundred forty-five".