156555049 has 6 divisors (see below), whose sum is σ = 182115114. Its totient is φ = 134190000.

The previous prime is 156555019. The next prime is 156555083. The reversal of 156555049 is 940555651.

156555049 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 only one way, i.e., 137475625 + 19079424 = 11725^2 + 4368^2 .

It is not a de Polignac number, because 156555049 - 2¹³ = 156546857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (156555019) 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, 1597452 + ... + 1597549.

It is an arithmetic number, because the mean of its divisors is an integer number (30352519).

Almost surely, 2^156555049 is an apocalyptic number.

It is an amenable number.

156555049 is a deficient number, since it is larger than the sum of its proper divisors (25560065).

156555049 is an equidigital number, since it uses as much as digits as its factorization.

156555049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3195015 (or 3195008 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 40.

The square root of 156555049 is about 12512.1960102933. The cubic root of 156555049 is about 538.9589556647.

The spelling of 156555049 in words is "one hundred fifty-six million, five hundred fifty-five thousand, forty-nine".