245807122 has 16 divisors (see below), whose sum is σ = 415206144. Its totient is φ = 108126000.

The previous prime is 245807119. The next prime is 245807129. The reversal of 245807122 is 221708542.

It is a happy number.

It is a super-2 number, since 2×245807122² = 120842282451845768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (245807129) 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 7 ways as a sum of consecutive naturals, for example, 179529 + ... + 180892.

It is an arithmetic number, because the mean of its divisors is an integer number (25950384).

Almost surely, 2^245807122 is an apocalyptic number.

245807122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

245807122 is a deficient number, since it is larger than the sum of its proper divisors (169399022).

245807122 is a wasteful number, since it uses less digits than its factorization.

245807122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360465.

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 245807122 is about 15678.2372095845. The cubic root of 245807122 is about 626.4188539680.

The spelling of 245807122 in words is "two hundred forty-five million, eight hundred seven thousand, one hundred twenty-two".