75187361 has 2 divisors, whose sum is σ = 75187362. Its totient is φ = 75187360.

The previous prime is 75187309. The next prime is 75187363. The reversal of 75187361 is 16378157.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43151761 + 32035600 = 6569^2 + 5660^2 .

It is a cyclic number.

It is not a de Polignac number, because 75187361 - 2⁶ = 75187297 is a prime.

Together with 75187363, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (75187363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37593680 + 37593681.

It is an arithmetic number, because the mean of its divisors is an integer number (37593681).

Almost surely, 2^75187361 is an apocalyptic number.

It is an amenable number.

75187361 is a deficient number, since it is larger than the sum of its proper divisors (1).

75187361 is an equidigital number, since it uses as much as digits as its factorization.

75187361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35280, while the sum is 38.

The square root of 75187361 is about 8671.0645828526. The cubic root of 75187361 is about 422.0672103818.

It can be divided in two parts, 751873 and 61, that multiplied together give a triangular number (45864253 = T₉₅₇₇).

The spelling of 75187361 in words is "seventy-five million, one hundred eighty-seven thousand, three hundred sixty-one".