155244007 has 2 divisors, whose sum is σ = 155244008. Its totient is φ = 155244006.

The previous prime is 155243993. The next prime is 155244029. The reversal of 155244007 is 700442551.

155244007 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155244007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155244097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77622003 + 77622004.

It is an arithmetic number, because the mean of its divisors is an integer number (77622004).

Almost surely, 2^155244007 is an apocalyptic number.

155244007 is a deficient number, since it is larger than the sum of its proper divisors (1).

155244007 is an equidigital number, since it uses as much as digits as its factorization.

155244007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 155244007 is about 12459.6953012503. The cubic root of 155244007 is about 537.4502648771.

Adding to 155244007 its reverse (700442551), we get a palindrome (855686558).

The spelling of 155244007 in words is "one hundred fifty-five million, two hundred forty-four thousand, seven".