156455641 has 6 divisors (see below), whose sum is σ = 166200590. Its totient is φ = 147252096.

The previous prime is 156455603. The next prime is 156455723. The reversal of 156455641 is 146554651.

156455641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 44836416 + 111619225 = 6696^2 + 10565^2 .

It is a de Polignac number, because none of the positive numbers 2^k-156455641 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 156455641.

It is not an unprimeable number, because it can be changed into a prime (156455041) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 270396 + ... + 270973.

Almost surely, 2^156455641 is an apocalyptic number.

It is an amenable number.

156455641 is a deficient number, since it is larger than the sum of its proper divisors (9744949).

156455641 is an equidigital number, since it uses as much as digits as its factorization.

156455641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541403 (or 541386 counting only the distinct ones).

The product of its digits is 72000, while the sum is 37.

The square root of 156455641 is about 12508.2229353334. Note that the first 3 decimals coincide. The cubic root of 156455641 is about 538.8448569795.

The spelling of 156455641 in words is "one hundred fifty-six million, four hundred fifty-five thousand, six hundred forty-one".