156055994 has 4 divisors (see below), whose sum is σ = 234083994. Its totient is φ = 78027996.

The previous prime is 156055993. The next prime is 156056029. The reversal of 156055994 is 499550651.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 499550651 = 43 ⋅11617457.

It can be written as a sum of positive squares in only one way, i.e., 154132225 + 1923769 = 12415^2 + 1387^2 .

It is not an unprimeable number, because it can be changed into a prime (156055993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39013997 + ... + 39014000.

Almost surely, 2^156055994 is an apocalyptic number.

156055994 is a deficient number, since it is larger than the sum of its proper divisors (78028000).

156055994 is an equidigital number, since it uses as much as digits as its factorization.

156055994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78027999.

The product of its (nonzero) digits is 243000, while the sum is 44.

The square root of 156055994 is about 12492.2373496504. The cubic root of 156055994 is about 538.3856611125.

The spelling of 156055994 in words is "one hundred fifty-six million, fifty-five thousand, nine hundred ninety-four".