245550031 has 2 divisors, whose sum is σ = 245550032. Its totient is φ = 245550030.

The previous prime is 245549981. The next prime is 245550049. The reversal of 245550031 is 130055542.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 245550031 - 2¹³ = 245541839 is a prime.

It is a super-2 number, since 2×245550031² = 120589635448201922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 245549978 and 245550005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245550131) 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, 122775015 + 122775016.

It is an arithmetic number, because the mean of its divisors is an integer number (122775016).

Almost surely, 2^245550031 is an apocalyptic number.

245550031 is a deficient number, since it is larger than the sum of its proper divisors (1).

245550031 is an equidigital number, since it uses as much as digits as its factorization.

245550031 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 25.

The square root of 245550031 is about 15670.0360880248. The cubic root of 245550031 is about 626.2003861609.

The spelling of 245550031 in words is "two hundred forty-five million, five hundred fifty thousand, thirty-one".