156661054 has 32 divisors (see below), whose sum is σ = 263233152. Its totient is φ = 69324000.

The previous prime is 156661051. The next prime is 156661067. The reversal of 156661054 is 450166651.

It is a happy number.

156661054 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156661051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143049 + ... + 144139.

It is an arithmetic number, because the mean of its divisors is an integer number (8226036).

Almost surely, 2^156661054 is an apocalyptic number.

156661054 is a deficient number, since it is larger than the sum of its proper divisors (106572098).

156661054 is a wasteful number, since it uses less digits than its factorization.

156661054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 156661054 is about 12516.4313604158. The cubic root of 156661054 is about 539.0805730646.

The spelling of 156661054 in words is "one hundred fifty-six million, six hundred sixty-one thousand, fifty-four".