245211051 has 4 divisors (see below), whose sum is σ = 326948072. Its totient is φ = 163474032.

The previous prime is 245211049. The next prime is 245211061. The reversal of 245211051 is 150112542.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 245211051 - 2¹ = 245211049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245211061) 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 in 3 ways as a sum of consecutive naturals, for example, 40868506 + ... + 40868511.

It is an arithmetic number, because the mean of its divisors is an integer number (81737018).

Almost surely, 2^245211051 is an apocalyptic number.

245211051 is a deficient number, since it is larger than the sum of its proper divisors (81737021).

245211051 is an equidigital number, since it uses as much as digits as its factorization.

245211051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81737020.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 245211051 is about 15659.2161681228. The cubic root of 245211051 is about 625.9120984614.

Adding to 245211051 its reverse (150112542), we get a palindrome (395323593).

The spelling of 245211051 in words is "two hundred forty-five million, two hundred eleven thousand, fifty-one".