245205051 has 64 divisors (see below), whose sum is σ = 434273280. Its totient is φ = 119439360.

The previous prime is 245205043. The next prime is 245205113. The reversal of 245205051 is 150502542.

It is a happy number.

It is not a de Polignac number, because 245205051 - 2³ = 245205043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (245205011) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 212091 + ... + 213243.

It is an arithmetic number, because the mean of its divisors is an integer number (6785520).

Almost surely, 2^245205051 is an apocalyptic number.

245205051 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

245205051 is a deficient number, since it is larger than the sum of its proper divisors (189068229).

245205051 is a wasteful number, since it uses less digits than its factorization.

245205051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1236.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 245205051 is about 15659.0245864805. The cubic root of 245205051 is about 625.9069933309.

Adding to 245205051 its reverse (150502542), we get a palindrome (395707593).

The spelling of 245205051 in words is "two hundred forty-five million, two hundred five thousand, fifty-one".