75507988 has 24 divisors (see below), whose sum is σ = 139785408. Its totient is φ = 35614656.

The previous prime is 75507983. The next prime is 75507989. The reversal of 75507988 is 88970557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75507983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1095 + ... + 12337.

It is an arithmetic number, because the mean of its divisors is an integer number (5824392).

Almost surely, 2^75507988 is an apocalyptic number.

It is an amenable number.

75507988 is a deficient number, since it is larger than the sum of its proper divisors (64277420).

75507988 is a wasteful number, since it uses less digits than its factorization.

75507988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11343 (or 11341 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 49.

The square root of 75507988 is about 8689.5332440816. The cubic root of 75507988 is about 422.6663103532. Note that the first 3 decimals are identical.

The spelling of 75507988 in words is "seventy-five million, five hundred seven thousand, nine hundred eighty-eight".