155733157 has 2 divisors, whose sum is σ = 155733158. Its totient is φ = 155733156.

The previous prime is 155733121. The next prime is 155733169. The reversal of 155733157 is 751337551.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95531076 + 60202081 = 9774^2 + 7759^2 .

It is a cyclic number.

It is not a de Polignac number, because 155733157 - 2¹⁹ = 155208869 is a prime.

It is a super-3 number, since 3×155733157³ (a number of 26 digits) contains 333 as substring.

It is a Chen prime.

It is equal to p_8748460 and since 155733157 and 8748460 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155743157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77866578 + 77866579.

It is an arithmetic number, because the mean of its divisors is an integer number (77866579).

Almost surely, 2^155733157 is an apocalyptic number.

It is an amenable number.

155733157 is a deficient number, since it is larger than the sum of its proper divisors (1).

155733157 is an equidigital number, since it uses as much as digits as its factorization.

155733157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 55125, while the sum is 37.

The square root of 155733157 is about 12479.3091555583. The cubic root of 155733157 is about 538.0141474424.

The spelling of 155733157 in words is "one hundred fifty-five million, seven hundred thirty-three thousand, one hundred fifty-seven".