155228501 has 8 divisors (see below), whose sum is σ = 164145408. Its totient is φ = 146556000.

The previous prime is 155228483. The next prime is 155228527. The reversal of 155228501 is 105822551.

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

It is a cyclic number.

It is not a de Polignac number, because 155228501 - 2¹⁰ = 155227477 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 (155228401) 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 7 ways as a sum of consecutive naturals, for example, 59795 + ... + 62336.

It is an arithmetic number, because the mean of its divisors is an integer number (20518176).

Almost surely, 2^155228501 is an apocalyptic number.

It is an amenable number.

155228501 is a deficient number, since it is larger than the sum of its proper divisors (8916907).

155228501 is a wasteful number, since it uses less digits than its factorization.

155228501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122203.

The product of its (nonzero) digits is 4000, while the sum is 29.

The square root of 155228501 is about 12459.0730393557. The cubic root of 155228501 is about 537.4323705067.

The spelling of 155228501 in words is "one hundred fifty-five million, two hundred twenty-eight thousand, five hundred one".