155393453 has 2 divisors, whose sum is σ = 155393454. Its totient is φ = 155393452.

The previous prime is 155393393. The next prime is 155393461. The reversal of 155393453 is 354393551.

155393453 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136843204 + 18550249 = 11698^2 + 4307^2 .

It is a cyclic number.

It is not a de Polignac number, because 155393453 - 2⁶ = 155393389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155393473) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77696726 + 77696727.

It is an arithmetic number, because the mean of its divisors is an integer number (77696727).

Almost surely, 2^155393453 is an apocalyptic number.

It is an amenable number.

155393453 is a deficient number, since it is larger than the sum of its proper divisors (1).

155393453 is an equidigital number, since it uses as much as digits as its factorization.

155393453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 121500, while the sum is 38.

The square root of 155393453 is about 12465.6910357990. The cubic root of 155393453 is about 537.6226688114.

The spelling of 155393453 in words is "one hundred fifty-five million, three hundred ninety-three thousand, four hundred fifty-three".