75656501 has 2 divisors, whose sum is σ = 75656502. Its totient is φ = 75656500.

The previous prime is 75656459. The next prime is 75656507. The reversal of 75656501 is 10565657.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72420100 + 3236401 = 8510^2 + 1799^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75656501 is a prime.

It is a super-2 number, since 2×75656501² = 11447812287126002, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75656507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37828250 + 37828251.

It is an arithmetic number, because the mean of its divisors is an integer number (37828251).

Almost surely, 2^75656501 is an apocalyptic number.

It is an amenable number.

75656501 is a deficient number, since it is larger than the sum of its proper divisors (1).

75656501 is an equidigital number, since it uses as much as digits as its factorization.

75656501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31500, while the sum is 35.

The square root of 75656501 is about 8698.0745570500. The cubic root of 75656501 is about 422.9432361650.

The spelling of 75656501 in words is "seventy-five million, six hundred fifty-six thousand, five hundred one".