155297851 has 2 divisors, whose sum is σ = 155297852. Its totient is φ = 155297850.

The previous prime is 155297801. The next prime is 155297861. The reversal of 155297851 is 158792551.

It is a strong prime.

It is an emirp because it is prime and its reverse (158792551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 155297851 - 2¹⁷ = 155166779 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 155297798 and 155297807.

It is not a weakly prime, because it can be changed into another prime (155297801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77648925 + 77648926.

It is an arithmetic number, because the mean of its divisors is an integer number (77648926).

Almost surely, 2^155297851 is an apocalyptic number.

155297851 is a deficient number, since it is larger than the sum of its proper divisors (1).

155297851 is an equidigital number, since it uses as much as digits as its factorization.

155297851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 126000, while the sum is 43.

The square root of 155297851 is about 12461.8558409251. The cubic root of 155297851 is about 537.5123931521.

The spelling of 155297851 in words is "one hundred fifty-five million, two hundred ninety-seven thousand, eight hundred fifty-one".