156345555 has 16 divisors (see below), whose sum is σ = 258223104. Its totient is φ = 80694240.

The previous prime is 156345491. The next prime is 156345571. The reversal of 156345555 is 555543651.

It is not a de Polignac number, because 156345555 - 2⁶ = 156345491 is a prime.

It is an unprimeable number.

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, 167649 + ... + 168578.

It is an arithmetic number, because the mean of its divisors is an integer number (16138944).

Almost surely, 2^156345555 is an apocalyptic number.

156345555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

156345555 is a deficient number, since it is larger than the sum of its proper divisors (101877549).

156345555 is a wasteful number, since it uses less digits than its factorization.

156345555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336266.

The product of its digits is 225000, while the sum is 39.

The square root of 156345555 is about 12503.8216158101. The cubic root of 156345555 is about 538.7184458706.

The spelling of 156345555 in words is "one hundred fifty-six million, three hundred forty-five thousand, five hundred fifty-five".