75155740 has 24 divisors (see below), whose sum is σ = 172175472. Its totient is φ = 27329280.

The previous prime is 75155723. The next prime is 75155741. The reversal of 75155740 is 4755157.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 75155696 and 75155705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75155741) 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 7 ways as a sum of consecutive naturals, for example, 170589 + ... + 171028.

It is an arithmetic number, because the mean of its divisors is an integer number (7173978).

Almost surely, 2^75155740 is an apocalyptic number.

It is an amenable number.

75155740 is an abundant number, since it is smaller than the sum of its proper divisors (97019732).

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

75155740 is a wasteful number, since it uses less digits than its factorization.

75155740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341637 (or 341635 counting only the distinct ones).

The product of its (nonzero) digits is 24500, while the sum is 34.

The square root of 75155740 is about 8669.2410279101. The cubic root of 75155740 is about 422.0080335091.

The spelling of 75155740 in words is "seventy-five million, one hundred fifty-five thousand, seven hundred forty".