155536401 has 4 divisors (see below), whose sum is σ = 207381872. Its totient is φ = 103690932.

The previous prime is 155536379. The next prime is 155536421. The reversal of 155536401 is 104635551.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 155536401 - 2¹⁰ = 155535377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155536421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25922731 + ... + 25922736.

It is an arithmetic number, because the mean of its divisors is an integer number (51845468).

Almost surely, 2^155536401 is an apocalyptic number.

It is an amenable number.

155536401 is a deficient number, since it is larger than the sum of its proper divisors (51845471).

155536401 is an equidigital number, since it uses as much as digits as its factorization.

155536401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51845470.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 155536401 is about 12471.4233750603. The cubic root of 155536401 is about 537.7874731197.

The spelling of 155536401 in words is "one hundred fifty-five million, five hundred thirty-six thousand, four hundred one".