75078231 has 16 divisors (see below), whose sum is σ = 101861760. Its totient is φ = 49180320.

The previous prime is 75078229. The next prime is 75078247. The reversal of 75078231 is 13287057.

It is not a de Polignac number, because 75078231 - 2¹ = 75078229 is a prime.

It is a super-2 number, since 2×75078231² = 11273481540178722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 75078192 and 75078201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75078271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51825 + ... + 53253.

It is an arithmetic number, because the mean of its divisors is an integer number (6366360).

Almost surely, 2^75078231 is an apocalyptic number.

75078231 is a deficient number, since it is larger than the sum of its proper divisors (26783529).

75078231 is a wasteful number, since it uses less digits than its factorization.

75078231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1726.

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 75078231 is about 8664.7695295374. The cubic root of 75078231 is about 421.8629096563.

The spelling of 75078231 in words is "seventy-five million, seventy-eight thousand, two hundred thirty-one".