245553101 has 2 divisors, whose sum is σ = 245553102. Its totient is φ = 245553100.

The previous prime is 245553071. The next prime is 245553137. The reversal of 245553101 is 101355542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 152893225 + 92659876 = 12365^2 + 9626^2 .

It is a cyclic number.

It is not a de Polignac number, because 245553101 - 2¹⁴ = 245536717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245553401) 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, 122776550 + 122776551.

It is an arithmetic number, because the mean of its divisors is an integer number (122776551).

Almost surely, 2^245553101 is an apocalyptic number.

It is an amenable number.

245553101 is a deficient number, since it is larger than the sum of its proper divisors (1).

245553101 is an equidigital number, since it uses as much as digits as its factorization.

245553101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 245553101 is about 15670.1340453743. The cubic root of 245553101 is about 626.2029958493.

The spelling of 245553101 in words is "two hundred forty-five million, five hundred fifty-three thousand, one hundred one".