155205158 has 32 divisors (see below), whose sum is σ = 255432960. Its totient is φ = 70519680.

The previous prime is 155205137. The next prime is 155205179. The reversal of 155205158 is 851502551.

It is an interprime number because it is at equal distance from previous prime (155205137) and next prime (155205179).

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 65360 + ... + 67692.

It is an arithmetic number, because the mean of its divisors is an integer number (7982280).

Almost surely, 2^155205158 is an apocalyptic number.

155205158 is a deficient number, since it is larger than the sum of its proper divisors (100227802).

155205158 is a wasteful number, since it uses less digits than its factorization.

155205158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2432.

The product of its (nonzero) digits is 10000, while the sum is 32.

The square root of 155205158 is about 12458.1362169467. The cubic root of 155205158 is about 537.4054297653.

The spelling of 155205158 in words is "one hundred fifty-five million, two hundred five thousand, one hundred fifty-eight".