156214091 has 8 divisors (see below), whose sum is σ = 177825024. Its totient is φ = 135838120.

The previous prime is 156214073. The next prime is 156214099. The reversal of 156214091 is 190412651.

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

It is not a de Polignac number, because 156214091 - 2²² = 152019787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (156214099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 308471 + ... + 308976.

It is an arithmetic number, because the mean of its divisors is an integer number (22228128).

Almost surely, 2^156214091 is an apocalyptic number.

156214091 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

156214091 is a deficient number, since it is larger than the sum of its proper divisors (21610933).

156214091 is a wasteful number, since it uses less digits than its factorization.

156214091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617481.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 156214091 is about 12498.5635574653. The cubic root of 156214091 is about 538.5674087626.

The spelling of 156214091 in words is "one hundred fifty-six million, two hundred fourteen thousand, ninety-one".