156201345 has 32 divisors (see below), whose sum is σ = 278208000. Its totient is φ = 83152512.

The previous prime is 156201329. The next prime is 156201347. The reversal of 156201345 is 543102651.

156201345 is a `hidden beast` number, since 1 + 5 + 620 + 1 + 34 + 5 = 666.

It is not a de Polignac number, because 156201345 - 2⁴ = 156201329 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (156201347) 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 31 ways as a sum of consecutive naturals, for example, 141064 + ... + 142166.

It is an arithmetic number, because the mean of its divisors is an integer number (8694000).

Almost surely, 2^156201345 is an apocalyptic number.

156201345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

156201345 is a deficient number, since it is larger than the sum of its proper divisors (122006655).

156201345 is a wasteful number, since it uses less digits than its factorization.

156201345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2166 (or 2160 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 156201345 is about 12498.0536484686. The cubic root of 156201345 is about 538.5527605601.

Adding to 156201345 its reverse (543102651), we get a palindrome (699303996).

The spelling of 156201345 in words is "one hundred fifty-six million, two hundred one thousand, three hundred forty-five".