155055501 has 12 divisors (see below), whose sum is σ = 224864640. Its totient is φ = 102957000.

The previous prime is 155055499. The next prime is 155055541. The reversal of 155055501 is 105550551.

155055501 is a `hidden beast` number, since 155 + 0 + 5 + 5 + 501 = 666.

It is not a de Polignac number, because 155055501 - 2¹ = 155055499 is a prime.

It is a super-2 number, since 2×155055501² = 48084416780722002, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155055541) 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 11 ways as a sum of consecutive naturals, for example, 32061 + ... + 36578.

It is an arithmetic number, because the mean of its divisors is an integer number (18738720).

Almost surely, 2^155055501 is an apocalyptic number.

It is an amenable number.

155055501 is a deficient number, since it is larger than the sum of its proper divisors (69809139).

155055501 is a wasteful number, since it uses less digits than its factorization.

155055501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68896 (or 68893 counting only the distinct ones).

The product of its (nonzero) digits is 3125, while the sum is 27.

The square root of 155055501 is about 12452.1283722904. The cubic root of 155055501 is about 537.2326426626.

The spelling of 155055501 in words is "one hundred fifty-five million, fifty-five thousand, five hundred one".