74275961 has 2 divisors, whose sum is σ = 74275962. Its totient is φ = 74275960.

The previous prime is 74275939. The next prime is 74275963. The reversal of 74275961 is 16957247.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55785961 + 18490000 = 7469^2 + 4300^2 .

It is an emirp because it is prime and its reverse (16957247) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74275961 - 2¹⁸ = 74013817 is a prime.

Together with 74275963, 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 (74275963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37137980 + 37137981.

It is an arithmetic number, because the mean of its divisors is an integer number (37137981).

Almost surely, 2^74275961 is an apocalyptic number.

It is an amenable number.

74275961 is a deficient number, since it is larger than the sum of its proper divisors (1).

74275961 is an equidigital number, since it uses as much as digits as its factorization.

74275961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 105840, while the sum is 41.

The square root of 74275961 is about 8618.3502481623. The cubic root of 74275961 is about 420.3548795758.

The spelling of 74275961 in words is "seventy-four million, two hundred seventy-five thousand, nine hundred sixty-one".