245198651 has 2 divisors, whose sum is σ = 245198652. Its totient is φ = 245198650.

The previous prime is 245198647. The next prime is 245198659. The reversal of 245198651 is 156891542.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 245198651 - 2² = 245198647 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 245198599 and 245198608.

It is not a weakly prime, because it can be changed into another prime (245198659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122599325 + 122599326.

It is an arithmetic number, because the mean of its divisors is an integer number (122599326).

Almost surely, 2^245198651 is an apocalyptic number.

245198651 is a deficient number, since it is larger than the sum of its proper divisors (1).

245198651 is an equidigital number, since it uses as much as digits as its factorization.

245198651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 86400, while the sum is 41.

The square root of 245198651 is about 15658.8202301451. The cubic root of 245198651 is about 625.9015477666.

The spelling of 245198651 in words is "two hundred forty-five million, one hundred ninety-eight thousand, six hundred fifty-one".