75550507 has 2 divisors, whose sum is σ = 75550508. Its totient is φ = 75550506.

The previous prime is 75550477. The next prime is 75550523. The reversal of 75550507 is 70505557.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75550507 is a prime.

It is not a weakly prime, because it can be changed into another prime (75550207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37775253 + 37775254.

It is an arithmetic number, because the mean of its divisors is an integer number (37775254).

Almost surely, 2^75550507 is an apocalyptic number.

75550507 is a deficient number, since it is larger than the sum of its proper divisors (1).

75550507 is an equidigital number, since it uses as much as digits as its factorization.

75550507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30625, while the sum is 34.

The square root of 75550507 is about 8691.9794638506. The cubic root of 75550507 is about 422.7456307762.

The spelling of 75550507 in words is "seventy-five million, five hundred fifty thousand, five hundred seven".