155039047 has 2 divisors, whose sum is σ = 155039048. Its totient is φ = 155039046.

The previous prime is 155039011. The next prime is 155039083. The reversal of 155039047 is 740930551.

It is a balanced prime because it is at equal distance from previous prime (155039011) and next prime (155039083).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155039047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155039447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77519523 + 77519524.

It is an arithmetic number, because the mean of its divisors is an integer number (77519524).

Almost surely, 2^155039047 is an apocalyptic number.

155039047 is a deficient number, since it is larger than the sum of its proper divisors (1).

155039047 is an equidigital number, since it uses as much as digits as its factorization.

155039047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 155039047 is about 12451.4676644964. The cubic root of 155039047 is about 537.2136388466.

Adding to 155039047 its reverse (740930551), we get a palindrome (895969598).

The spelling of 155039047 in words is "one hundred fifty-five million, thirty-nine thousand, forty-seven".