156440055 has 8 divisors (see below), whose sum is σ = 250304112. Its totient is φ = 83434688.

The previous prime is 156440041. The next prime is 156440057. The reversal of 156440055 is 550044651.

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

It is a cyclic number.

It is not a de Polignac number, because 156440055 - 2⁶ = 156439991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156440057) 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, 5214654 + ... + 5214683.

It is an arithmetic number, because the mean of its divisors is an integer number (31288014).

Almost surely, 2^156440055 is an apocalyptic number.

156440055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

156440055 is a deficient number, since it is larger than the sum of its proper divisors (93864057).

156440055 is a wasteful number, since it uses less digits than its factorization.

156440055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10429345.

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 156440055 is about 12507.5998896671. The cubic root of 156440055 is about 538.8269632711.

The spelling of 156440055 in words is "one hundred fifty-six million, four hundred forty thousand, fifty-five".