75137231 has 12 divisors (see below), whose sum is σ = 84172680. Its totient is φ = 66961440.

The previous prime is 75137207. The next prime is 75137243. The reversal of 75137231 is 13273157.

It is not a de Polignac number, because 75137231 - 2¹⁴ = 75120847 is a prime.

It is a super-2 number, since 2×75137231² = 11291206964694722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 75137194 and 75137203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75137201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2765 + ... + 12566.

It is an arithmetic number, because the mean of its divisors is an integer number (7014390).

Almost surely, 2^75137231 is an apocalyptic number.

75137231 is a deficient number, since it is larger than the sum of its proper divisors (9035449).

75137231 is a wasteful number, since it uses less digits than its factorization.

75137231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15386 (or 15373 counting only the distinct ones).

The product of its digits is 4410, while the sum is 29.

The square root of 75137231 is about 8668.1734523485. The cubic root of 75137231 is about 421.9733872843.

The spelling of 75137231 in words is "seventy-five million, one hundred thirty-seven thousand, two hundred thirty-one".