245056553 has 4 divisors (see below), whose sum is σ = 280064640. Its totient is φ = 210048468.

The previous prime is 245056531. The next prime is 245056561. The reversal of 245056553 is 355650542.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 245056553 - 2⁸ = 245056297 is a prime.

It is a super-3 number, since 3×245056553³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245056573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17504033 + ... + 17504046.

It is an arithmetic number, because the mean of its divisors is an integer number (70016160).

Almost surely, 2^245056553 is an apocalyptic number.

It is an amenable number.

245056553 is a deficient number, since it is larger than the sum of its proper divisors (35008087).

245056553 is an equidigital number, since it uses as much as digits as its factorization.

245056553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35008086.

The product of its (nonzero) digits is 90000, while the sum is 35.

The square root of 245056553 is about 15654.2822575805. The cubic root of 245056553 is about 625.7806165080.

The spelling of 245056553 in words is "two hundred forty-five million, fifty-six thousand, five hundred fifty-three".