155958953 has 2 divisors, whose sum is σ = 155958954. Its totient is φ = 155958952.

The previous prime is 155958911. The next prime is 155958961. The reversal of 155958953 is 359859551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 137053849 + 18905104 = 11707^2 + 4348^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155958953 is a prime.

It is not a weakly prime, because it can be changed into another prime (155958983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77979476 + 77979477.

It is an arithmetic number, because the mean of its divisors is an integer number (77979477).

Almost surely, 2^155958953 is an apocalyptic number.

It is an amenable number.

155958953 is a deficient number, since it is larger than the sum of its proper divisors (1).

155958953 is an equidigital number, since it uses as much as digits as its factorization.

155958953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1215000, while the sum is 50.

The square root of 155958953 is about 12488.3526936102. The cubic root of 155958953 is about 538.2740423816.

The spelling of 155958953 in words is "one hundred fifty-five million, nine hundred fifty-eight thousand, nine hundred fifty-three".