156149401 has 2 divisors, whose sum is σ = 156149402. Its totient is φ = 156149400.

The previous prime is 156149393. The next prime is 156149419. The reversal of 156149401 is 104941651.

156149401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125888400 + 30261001 = 11220^2 + 5501^2 .

It is an emirp because it is prime and its reverse (104941651) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 156149401 - 2³ = 156149393 is a prime.

It is not a weakly prime, because it can be changed into another prime (156149101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78074700 + 78074701.

It is an arithmetic number, because the mean of its divisors is an integer number (78074701).

Almost surely, 2^156149401 is an apocalyptic number.

It is an amenable number.

156149401 is a deficient number, since it is larger than the sum of its proper divisors (1).

156149401 is an equidigital number, since it uses as much as digits as its factorization.

156149401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 156149401 is about 12495.9753921013. The cubic root of 156149401 is about 538.4930562383.

It can be divided in two parts, 15 and 6149401, that added together give a palindrome (6149416).

The spelling of 156149401 in words is "one hundred fifty-six million, one hundred forty-nine thousand, four hundred one".