75055491 has 40 divisors (see below), whose sum is σ = 134900480. Its totient is φ = 40625712.

The previous prime is 75055483. The next prime is 75055501. The reversal of 75055491 is 19455057.

It is not a de Polignac number, because 75055491 - 2³ = 75055483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75055411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 7290 + ... + 14256.

It is an arithmetic number, because the mean of its divisors is an integer number (3372512).

Almost surely, 2^75055491 is an apocalyptic number.

75055491 is a deficient number, since it is larger than the sum of its proper divisors (59844989).

75055491 is a wasteful number, since it uses less digits than its factorization.

75055491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7005 (or 6996 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 36.

The square root of 75055491 is about 8663.4572198401. The cubic root of 75055491 is about 421.8203135040.

It can be divided in two parts, 7505 and 5491, that added together give a square (12996 = 114²).

The spelling of 75055491 in words is "seventy-five million, fifty-five thousand, four hundred ninety-one".