75155131 has 2 divisors, whose sum is σ = 75155132. Its totient is φ = 75155130.

The previous prime is 75155123. The next prime is 75155137. The reversal of 75155131 is 13155157.

It is a strong prime.

It is an emirp because it is prime and its reverse (13155157) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75155131 - 2³ = 75155123 is a prime.

It is a super-2 number, since 2×75155131² = 11296587431254322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 75155131.

It is not a weakly prime, because it can be changed into another prime (75155137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37577565 + 37577566.

It is an arithmetic number, because the mean of its divisors is an integer number (37577566).

Almost surely, 2^75155131 is an apocalyptic number.

75155131 is a deficient number, since it is larger than the sum of its proper divisors (1).

75155131 is an equidigital number, since it uses as much as digits as its factorization.

75155131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2625, while the sum is 28.

The square root of 75155131 is about 8669.2059036569. The cubic root of 75155131 is about 422.0068936379.

The spelling of 75155131 in words is "seventy-five million, one hundred fifty-five thousand, one hundred thirty-one".