155953103 has 4 divisors (see below), whose sum is σ = 155990400. Its totient is φ = 155915808.

The previous prime is 155953081. The next prime is 155953139. The reversal of 155953103 is 301359551.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 155953103 - 2¹⁴ = 155936719 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 155953103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155953163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11450 + ... + 21047.

It is an arithmetic number, because the mean of its divisors is an integer number (38997600).

Almost surely, 2^155953103 is an apocalyptic number.

155953103 is a deficient number, since it is larger than the sum of its proper divisors (37297).

155953103 is an equidigital number, since it uses as much as digits as its factorization.

155953103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37296.

The product of its (nonzero) digits is 10125, while the sum is 32.

The square root of 155953103 is about 12488.1184731728. The cubic root of 155953103 is about 538.2673121010.

The spelling of 155953103 in words is "one hundred fifty-five million, nine hundred fifty-three thousand, one hundred three".