155074235249 has 2 divisors, whose sum is σ = 155074235250. Its totient is φ = 155074235248.

The previous prime is 155074235227. The next prime is 155074235257. The reversal of 155074235249 is 942532470551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105191246224 + 49882989025 = 324332^2 + 223345^2 .

It is a cyclic number.

It is not a de Polignac number, because 155074235249 - 2¹² = 155074231153 is a prime.

It is not a weakly prime, because it can be changed into another prime (155074235279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77537117624 + 77537117625.

It is an arithmetic number, because the mean of its divisors is an integer number (77537117625).

Almost surely, 2^155074235249 is an apocalyptic number.

It is an amenable number.

155074235249 is a deficient number, since it is larger than the sum of its proper divisors (1).

155074235249 is an equidigital number, since it uses as much as digits as its factorization.

155074235249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512000, while the sum is 47.

The spelling of 155074235249 in words is "one hundred fifty-five billion, seventy-four million, two hundred thirty-five thousand, two hundred forty-nine".