75528031 has 2 divisors, whose sum is σ = 75528032. Its totient is φ = 75528030.

The previous prime is 75527993. The next prime is 75528049. The reversal of 75528031 is 13082557.

It is a strong prime.

It is an emirp because it is prime and its reverse (13082557) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75528031 - 2¹³ = 75519839 is a prime.

It is a super-2 number, since 2×75528031² = 11408966933473922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 75527984 and 75528002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75528071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37764015 + 37764016.

It is an arithmetic number, because the mean of its divisors is an integer number (37764016).

Almost surely, 2^75528031 is an apocalyptic number.

75528031 is a deficient number, since it is larger than the sum of its proper divisors (1).

75528031 is an equidigital number, since it uses as much as digits as its factorization.

75528031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 75528031 is about 8690.6864515986. The cubic root of 75528031 is about 422.7037048577.

The spelling of 75528031 in words is "seventy-five million, five hundred twenty-eight thousand, thirty-one".