245619953 has 2 divisors, whose sum is σ = 245619954. Its totient is φ = 245619952.

The previous prime is 245619943. The next prime is 245620003. The reversal of 245619953 is 359916542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 228372544 + 17247409 = 15112^2 + 4153^2 .

It is a cyclic number.

It is not a de Polignac number, because 245619953 - 2¹⁰ = 245618929 is a prime.

It is a super-2 number, since 2×245619953² = 120658322623444418, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (245619943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122809976 + 122809977.

It is an arithmetic number, because the mean of its divisors is an integer number (122809977).

Almost surely, 2^245619953 is an apocalyptic number.

It is an amenable number.

245619953 is a deficient number, since it is larger than the sum of its proper divisors (1).

245619953 is an equidigital number, since it uses as much as digits as its factorization.

245619953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 291600, while the sum is 44.

The square root of 245619953 is about 15672.2670025750. The cubic root of 245619953 is about 626.2598187578.

The spelling of 245619953 in words is "two hundred forty-five million, six hundred nineteen thousand, nine hundred fifty-three".