155361253 has 2 divisors, whose sum is σ = 155361254. Its totient is φ = 155361252.

The previous prime is 155361223. The next prime is 155361281. The reversal of 155361253 is 352163551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83484769 + 71876484 = 9137^2 + 8478^2 .

It is a cyclic number.

It is not a de Polignac number, because 155361253 - 2⁵ = 155361221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155361203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77680626 + 77680627.

It is an arithmetic number, because the mean of its divisors is an integer number (77680627).

Almost surely, 2^155361253 is an apocalyptic number.

It is an amenable number.

155361253 is a deficient number, since it is larger than the sum of its proper divisors (1).

155361253 is an equidigital number, since it uses as much as digits as its factorization.

155361253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13500, while the sum is 31.

The square root of 155361253 is about 12464.3994239594. The cubic root of 155361253 is about 537.5855315844.

The spelling of 155361253 in words is "one hundred fifty-five million, three hundred sixty-one thousand, two hundred fifty-three".