155954213 has 2 divisors, whose sum is σ = 155954214. Its totient is φ = 155954212.

The previous prime is 155954179. The next prime is 155954219. The reversal of 155954213 is 312459551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 146724769 + 9229444 = 12113^2 + 3038^2 .

It is a cyclic number.

It is not a de Polignac number, because 155954213 - 2¹⁴ = 155937829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155954219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77977106 + 77977107.

It is an arithmetic number, because the mean of its divisors is an integer number (77977107).

Almost surely, 2^155954213 is an apocalyptic number.

It is an amenable number.

155954213 is a deficient number, since it is larger than the sum of its proper divisors (1).

155954213 is an equidigital number, since it uses as much as digits as its factorization.

155954213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27000, while the sum is 35.

The square root of 155954213 is about 12488.1629153371. The cubic root of 155954213 is about 538.2685891415.

The spelling of 155954213 in words is "one hundred fifty-five million, nine hundred fifty-four thousand, two hundred thirteen".