155047037 has 2 divisors, whose sum is σ = 155047038. Its totient is φ = 155047036.

The previous prime is 155047007. The next prime is 155047043. The reversal of 155047037 is 730740551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105288121 + 49758916 = 10261^2 + 7054^2 .

It is a cyclic number.

It is not a de Polignac number, because 155047037 - 2⁸ = 155046781 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 155046994 and 155047012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155047007) 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, 77523518 + 77523519.

It is an arithmetic number, because the mean of its divisors is an integer number (77523519).

Almost surely, 2^155047037 is an apocalyptic number.

It is an amenable number.

155047037 is a deficient number, since it is larger than the sum of its proper divisors (1).

155047037 is an equidigital number, since it uses as much as digits as its factorization.

155047037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14700, while the sum is 32.

The square root of 155047037 is about 12451.7885060741. The cubic root of 155047037 is about 537.2228671955. Note that the first 3 decimals are identical.

Adding to 155047037 its reverse (730740551), we get a palindrome (885787588).

The spelling of 155047037 in words is "one hundred fifty-five million, forty-seven thousand, thirty-seven".