155001147 has 32 divisors (see below), whose sum is σ = 244813824. Its totient is φ = 85363200.

The previous prime is 155001139. The next prime is 155001191. The reversal of 155001147 is 741100551.

155001147 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 155001147 - 2³ = 155001139 is a prime.

155001147 is a modest number, since divided by 1147 gives 155 as remainder.

It is not an unprimeable number, because it can be changed into a prime (155001127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 297247 + ... + 297767.

It is an arithmetic number, because the mean of its divisors is an integer number (7650432).

Almost surely, 2^155001147 is an apocalyptic number.

155001147 is a deficient number, since it is larger than the sum of its proper divisors (89812677).

155001147 is a wasteful number, since it uses less digits than its factorization.

155001147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019.

The product of its (nonzero) digits is 700, while the sum is 24.

The square root of 155001147 is about 12449.9456625320. The cubic root of 155001147 is about 537.1698605069.

Adding to 155001147 its reverse (741100551), we get a palindrome (896101698).

The spelling of 155001147 in words is "one hundred fifty-five million, one thousand, one hundred forty-seven".