155858101 has 16 divisors (see below), whose sum is σ = 183287808. Its totient is φ = 129754800.

The previous prime is 155858099. The next prime is 155858137. The reversal of 155858101 is 101858551.

It is not a de Polignac number, because 155858101 - 2¹ = 155858099 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 (155858161) 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 15 ways as a sum of consecutive naturals, for example, 56136 + ... + 58846.

It is an arithmetic number, because the mean of its divisors is an integer number (11455488).

Almost surely, 2^155858101 is an apocalyptic number.

It is an amenable number.

155858101 is a deficient number, since it is larger than the sum of its proper divisors (27429707).

155858101 is a wasteful number, since it uses less digits than its factorization.

155858101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2952.

The product of its (nonzero) digits is 8000, while the sum is 34.

The square root of 155858101 is about 12484.3141982249. The cubic root of 155858101 is about 538.1579910780.

The spelling of 155858101 in words is "one hundred fifty-five million, eight hundred fifty-eight thousand, one hundred one".