74000051 has 2 divisors, whose sum is σ = 74000052. Its totient is φ = 74000050.

The previous prime is 73999969. The next prime is 74000053. The reversal of 74000051 is 15000047.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74000051 is a prime.

Together with 74000053, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 73999993 and 74000029.

It is not a weakly prime, because it can be changed into another prime (74000053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37000025 + 37000026.

It is an arithmetic number, because the mean of its divisors is an integer number (37000026).

Almost surely, 2^74000051 is an apocalyptic number.

74000051 is a deficient number, since it is larger than the sum of its proper divisors (1).

74000051 is an equidigital number, since it uses as much as digits as its factorization.

74000051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 74000051 is about 8602.3282313569. The cubic root of 74000051 is about 419.8337418291.

Adding to 74000051 its reverse (15000047), we get a palindrome (89000098).

The spelling of 74000051 in words is "seventy-four million, fifty-one", and thus it is an aban number.