240400051 has 2 divisors, whose sum is σ = 240400052. Its totient is φ = 240400050.

The previous prime is 240400033. The next prime is 240400067. The reversal of 240400051 is 150004042.

It is an a-pointer prime, because the next prime (240400067) can be obtained adding 240400051 to its sum of digits (16).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 240400051 - 2¹³ = 240391859 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 240399998 and 240400034.

It is not a weakly prime, because it can be changed into another prime (240400001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120200025 + 120200026.

It is an arithmetic number, because the mean of its divisors is an integer number (120200026).

Almost surely, 2^240400051 is an apocalyptic number.

240400051 is a deficient number, since it is larger than the sum of its proper divisors (1).

240400051 is an equidigital number, since it uses as much as digits as its factorization.

240400051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 240400051 is about 15504.8395992993. The cubic root of 240400051 is about 621.7916015902.

Adding to 240400051 its reverse (150004042), we get a palindrome (390404093).

The spelling of 240400051 in words is "two hundred forty million, four hundred thousand, fifty-one".