75454987 has 8 divisors (see below), whose sum is σ = 78142320. Its totient is φ = 72814560.

The previous prime is 75454957. The next prime is 75454997. The reversal of 75454987 is 78945457.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 75454987 - 2¹¹ = 75452939 is a prime.

It is a super-3 number, since 3×75454987³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 75454987.

It is not an unprimeable number, because it can be changed into a prime (75454937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8437 + ... + 14902.

It is an arithmetic number, because the mean of its divisors is an integer number (9767790).

Almost surely, 2^75454987 is an apocalyptic number.

75454987 is a deficient number, since it is larger than the sum of its proper divisors (2687333).

75454987 is a wasteful number, since it uses less digits than its factorization.

75454987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23453.

The product of its digits is 1411200, while the sum is 49.

The square root of 75454987 is about 8686.4830052214. The cubic root of 75454987 is about 422.5673937520.

The spelling of 75454987 in words is "seventy-five million, four hundred fifty-four thousand, nine hundred eighty-seven".