73245251 has 2 divisors, whose sum is σ = 73245252. Its totient is φ = 73245250.

The previous prime is 73245239. The next prime is 73245283. The reversal of 73245251 is 15254237.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (15254237) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73245251 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (73215251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36622625 + 36622626.

It is an arithmetic number, because the mean of its divisors is an integer number (36622626).

Almost surely, 2^73245251 is an apocalyptic number.

73245251 is a deficient number, since it is larger than the sum of its proper divisors (1).

73245251 is an equidigital number, since it uses as much as digits as its factorization.

73245251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8400, while the sum is 29.

The square root of 73245251 is about 8558.3439402726. The cubic root of 73245251 is about 418.4014271290.

Adding to 73245251 its reverse (15254237), we get a palindrome (88499488).

The spelling of 73245251 in words is "seventy-three million, two hundred forty-five thousand, two hundred fifty-one".