155022071 has 2 divisors, whose sum is σ = 155022072. Its totient is φ = 155022070.

The previous prime is 155022067. The next prime is 155022149. The reversal of 155022071 is 170220551.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (170220551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 155022071 - 2² = 155022067 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155022011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77511035 + 77511036.

It is an arithmetic number, because the mean of its divisors is an integer number (77511036).

Almost surely, 2^155022071 is an apocalyptic number.

155022071 is a deficient number, since it is larger than the sum of its proper divisors (1).

155022071 is an equidigital number, since it uses as much as digits as its factorization.

155022071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 700, while the sum is 23.

The square root of 155022071 is about 12450.7859591272. The cubic root of 155022071 is about 537.1940307290.

The spelling of 155022071 in words is "one hundred fifty-five million, twenty-two thousand, seventy-one".