155320002251 has 2 divisors, whose sum is σ = 155320002252. Its totient is φ = 155320002250.

The previous prime is 155320002193. The next prime is 155320002269. The reversal of 155320002251 is 152200023551.

It is a strong prime.

It is an emirp because it is prime and its reverse (152200023551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 155320002251 - 2¹⁴ = 155319985867 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 155320002251.

It is not a weakly prime, because it can be changed into another prime (155320002281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77660001125 + 77660001126.

It is an arithmetic number, because the mean of its divisors is an integer number (77660001126).

Almost surely, 2^155320002251 is an apocalyptic number.

155320002251 is a deficient number, since it is larger than the sum of its proper divisors (1).

155320002251 is an equidigital number, since it uses as much as digits as its factorization.

155320002251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3000, while the sum is 26.

The spelling of 155320002251 in words is "one hundred fifty-five billion, three hundred twenty million, two thousand, two hundred fifty-one".