245624651 has 2 divisors, whose sum is σ = 245624652. Its totient is φ = 245624650.

The previous prime is 245624581. The next prime is 245624657. The reversal of 245624651 is 156426542.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245624651 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (245624657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122812325 + 122812326.

It is an arithmetic number, because the mean of its divisors is an integer number (122812326).

Almost surely, 2^245624651 is an apocalyptic number.

245624651 is a deficient number, since it is larger than the sum of its proper divisors (1).

245624651 is an equidigital number, since it uses as much as digits as its factorization.

245624651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 57600, while the sum is 35.

The square root of 245624651 is about 15672.4168844502. The cubic root of 245624651 is about 626.2638115793.

The spelling of 245624651 in words is "two hundred forty-five million, six hundred twenty-four thousand, six hundred fifty-one".