75256989 has 8 divisors (see below), whose sum is σ = 104705472. Its totient is φ = 47989920.

The previous prime is 75256969. The next prime is 75256999. The reversal of 75256989 is 98965257.

It is a happy number.

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

It is not a de Polignac number, because 75256989 - 2⁸ = 75256733 is a prime.

It is a super-2 number, since 2×75256989² = 11327228786692242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75256969) 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, 545272 + ... + 545409.

It is an arithmetic number, because the mean of its divisors is an integer number (13088184).

Almost surely, 2^75256989 is an apocalyptic number.

It is an amenable number.

75256989 is a deficient number, since it is larger than the sum of its proper divisors (29448483).

75256989 is a wasteful number, since it uses less digits than its factorization.

75256989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1090707.

The product of its digits is 1360800, while the sum is 51.

The square root of 75256989 is about 8675.0786163585. The cubic root of 75256989 is about 422.1974566909.

It can be divided in two parts, 75256 and 989, that added together give a triangular number (76245 = T₃₉₀).

The spelling of 75256989 in words is "seventy-five million, two hundred fifty-six thousand, nine hundred eighty-nine".