155520053 has 12 divisors (see below), whose sum is σ = 169092000. Its totient is φ = 142970256.

The previous prime is 155520017. The next prime is 155520067. The reversal of 155520053 is 350025551.

It is not a de Polignac number, because 155520053 - 2⁶ = 155519989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155520653) 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 in 11 ways as a sum of consecutive naturals, for example, 42698 + ... + 46196.

It is an arithmetic number, because the mean of its divisors is an integer number (14091000).

Almost surely, 2^155520053 is an apocalyptic number.

155520053 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

155520053 is a deficient number, since it is larger than the sum of its proper divisors (13571947).

155520053 is a wasteful number, since it uses less digits than its factorization.

155520053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3788 (or 3775 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 26.

The square root of 155520053 is about 12470.7679394655. The cubic root of 155520053 is about 537.7686306760.

The spelling of 155520053 in words is "one hundred fifty-five million, five hundred twenty thousand, fifty-three".