156440056 has 8 divisors (see below), whose sum is σ = 293325120. Its totient is φ = 78220024.

The previous prime is 156440041. The next prime is 156440057. The reversal of 156440056 is 650044651.

156440056 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×156440056² = 48946982242566272, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 9777496 + ... + 9777511.

It is an arithmetic number, because the mean of its divisors is an integer number (36665640).

Almost surely, 2^156440056 is an apocalyptic number.

It is an amenable number.

156440056 is a deficient number, since it is larger than the sum of its proper divisors (136885064).

156440056 is a wasteful number, since it uses less digits than its factorization.

156440056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19555013 (or 19555009 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 156440056 is about 12507.5999296428. The cubic root of 156440056 is about 538.8269644192.

The spelling of 156440056 in words is "one hundred fifty-six million, four hundred forty thousand, fifty-six".