155103553 has 8 divisors (see below), whose sum is σ = 169562880. Its totient is φ = 140704080.

The previous prime is 155103551. The next prime is 155103577. The reversal of 155103553 is 355301551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 155103553 - 2¹ = 155103551 is a prime.

It is a super-2 number, since 2×155103553² = 48114224306447618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155103551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9450 + ... + 19987.

It is an arithmetic number, because the mean of its divisors is an integer number (21195360).

Almost surely, 2^155103553 is an apocalyptic number.

It is an amenable number.

155103553 is a deficient number, since it is larger than the sum of its proper divisors (14459327).

155103553 is a wasteful number, since it uses less digits than its factorization.

155103553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29927.

The product of its (nonzero) digits is 5625, while the sum is 28.

The square root of 155103553 is about 12454.0576921741. The cubic root of 155103553 is about 537.2881334095.

The spelling of 155103553 in words is "one hundred fifty-five million, one hundred three thousand, five hundred fifty-three".