75979261 has 2 divisors, whose sum is σ = 75979262. Its totient is φ = 75979260.

The previous prime is 75979259. The next prime is 75979283. The reversal of 75979261 is 16297957.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65707236 + 10272025 = 8106^2 + 3205^2 .

It is a cyclic number.

It is not a de Polignac number, because 75979261 - 2¹ = 75979259 is a prime.

It is a super-2 number, since 2×75979261² = 11545696204212242, which contains 22 as substring.

Together with 75979259, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75979291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37989630 + 37989631.

It is an arithmetic number, because the mean of its divisors is an integer number (37989631).

Almost surely, 2^75979261 is an apocalyptic number.

It is an amenable number.

75979261 is a deficient number, since it is larger than the sum of its proper divisors (1).

75979261 is an equidigital number, since it uses as much as digits as its factorization.

75979261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 238140, while the sum is 46.

The square root of 75979261 is about 8716.6083426984. The cubic root of 75979261 is about 423.5438256461.

The spelling of 75979261 in words is "seventy-five million, nine hundred seventy-nine thousand, two hundred sixty-one".